{"id":2636,"date":"2017-09-12T10:46:49","date_gmt":"2017-09-12T17:46:49","guid":{"rendered":"https:\/\/www.classadrivers.com\/become-a-truck-driver\/?p=2636"},"modified":"2018-01-30T11:56:04","modified_gmt":"2018-01-30T18:56:04","slug":"combination-vehicles-cdl-practice-test","status":"publish","type":"post","link":"https:\/\/www.classadrivers.com\/become-a-truck-driver\/combination-vehicles-cdl-practice-test\/","title":{"rendered":"Combination Vehicles CDL Practice Test"},"content":{"rendered":"<h2><span style=\"font-family: georgia, palatino, serif; font-size: 14px;\"><strong>Want to review your answers at any time?<\/strong><\/span><\/h2>\n<p>Submit your email at the end of the test.<\/p>\n<hr \/>\n<div id=\"mtq_quiz_area-1\" class=\"mtq_quiz_area mtq_color_blue\"> \r\n  <!--Quiz generated using mTouch Quiz Version 3.1.3 by G. Michael Guy (http:\/\/gmichaelguy.com\/quizplugin\/)-->\r\n  <!--Enhanced with mTouch Quiz Gravity Forms Addon Version 1.0.0 (http:\/\/gmichaelguy.com\/quizplugin\/gf\/)-->    <!--Enhanced with mTouch Quiz Timer Addon Version 1.0.0 (http:\/\/gmichaelguy.com\/quizplugin\/go\/timer\/)-->  \r\n      \r\n  <!-- Shortcode entered mtouchquiz id=12 --> \r\n  <!-- Shortcode interpreted mtouchquiz id=12 alerts=on singlepage=off hints=on startscreen=off finalscreen=on multiplechances=off showanswers=end show_stamps=on randomq=off randoma=on status=on labels=on title=on proofread=off list=on time=on8offoff scoring=off formid=1 vform=on autoadvance=off autosubmit=off inform=off forcecf=off forcegf=off offset=1 questions=20 firstid=428 lastid=447 color=blue --> \r\n  <!--form action=\"\" method=\"post\" class=\"quiz-form\" id=\"quiz-12\"-->\r\n    <div id=\"mtq_quiztitle-1\" class=\"mtq_quiztitle\" >\r\n  <h2>Combination Vehicle Endorsement Test<\/h2>\r\n  <\/div>\r\n      <div id=\"mtq_timer_row-1\"><div id=\"mtq_timer_box-1\" class=\"mtq_timer\"><\/div> <\/div>\r\n      <noscript>\r\n  <div id=\"mtq_javawarning-1\" class=\"mtq_javawarning\">\r\n  Please wait while the activity loads.<\/br> If this activity does not load, try refreshing your browser. Also, this page requires javascript. Please visit using a browser with javascript enabled.  <div class=\"mtq_failed_button\" onclick=\"mtq_start_one(1)\">\r\n  If loading fails, click here to try again  <\/div><\/div>\r\n  <\/noscript>\r\n  <div id=\"mtq_quiz_results_bubble-1\" class=\"mtq_quiz_results_bubble\"> <div id=\"mtq_quiz_results-1\" class=\"mtq_quiz_results\"><p>%%FORM%%<\/p> <br>    \r\n  <\/div>    <div id=\"mtq_contact_form-1\"> \n                <div class='gf_browser_gecko gform_wrapper' id='gform_wrapper_1' ><a id='gf_1' class='gform_anchor' ><\/a><form method='post' enctype='multipart\/form-data' target='gform_ajax_frame_1' id='gform_1'  action='\/become-a-truck-driver\/wp-json\/wp\/v2\/posts\/2636#gf_1'>\n                        <div class='gform_heading'>\n                            <h3 class='gform_title'>Get Results & Explanations<\/h3>\n                            <span class='gform_description'><\/span>\n                        <\/div>\n                        <div class='gform_body'><ul id='gform_fields_1' class='gform_fields top_label form_sublabel_below description_below'><li id='field_1_10' class='gfield field_sublabel_below field_description_below gfield_visibility_visible' ><label class='gfield_label' for='input_1_10' >Enter email &amp; submit<\/label><div class='ginput_container ginput_container_email'>\n                            <input name='input_10' id='input_1_10' type='text' value='' class='large' tabindex='1'     aria-invalid=\"false\"\/>\n                        <\/div><\/li><li id='field_1_12' class='gfield gsection mtq_auto field_sublabel_below field_description_below gfield_visibility_visible' ><h2 class='gsection_title'>mTouch Quiz Populated Fields<\/h2><div class='gsection_description'>mTouch Quiz will automatically populate the fields below. Feel Free to add additional fields for the Quiz Taker to complete using the \"Add Fields\" options to the right.<\/div><\/li><li id='field_1_11' class='gfield gform_hidden field_sublabel_below field_description_below gfield_visibility_visible' ><input name='input_11' id='input_1_11' type='hidden' class='gform_hidden'  aria-invalid=\"false\" value='05\/22\/2026' \/><\/li><li id='field_1_6' class='gfield mtq_quiz_name field_sublabel_below field_description_below gfield_visibility_visible' ><label class='gfield_label' for='input_1_6' >Quiz Name<\/label><div class='ginput_container ginput_container_text'><input name='input_6' id='input_1_6' type='text' value='' class='medium'  tabindex='2'    aria-invalid=\"false\" \/><\/div><div class='gfield_description'>The name of the quiz<\/div><\/li><li id='field_1_1' class='gfield mtq field_sublabel_below field_description_below gfield_visibility_visible' ><label class='gfield_label' for='input_1_1' >Results Summary<\/label><div class='ginput_container ginput_container_textarea'><textarea name='input_1' id='input_1_1' class='textarea medium' tabindex='3'    aria-invalid=\"false\"   rows='10' cols='50'><\/textarea><\/div><\/li><li id='field_1_2' class='gfield mtq_score field_sublabel_below field_description_below gfield_visibility_visible' ><label class='gfield_label' for='input_1_2' >Score<\/label><div class='ginput_container ginput_container_number'><input name='input_2' id='input_1_2' type='text'    value='' class='medium' tabindex='4'      aria-invalid=\"false\"\/><\/div><div class='gfield_description'>The number of correct answers. This has the same value as the %%SCORE%% Variable on the Final Screen.<\/div><\/li><li id='field_1_3' class='gfield mtq_total field_sublabel_below field_description_below gfield_visibility_visible' ><label class='gfield_label' for='input_1_3' >Total Questions<\/label><div class='ginput_container ginput_container_number'><input name='input_3' id='input_1_3' type='text'    value='' class='medium' tabindex='5'      aria-invalid=\"false\"\/><\/div><div class='gfield_description'>The total number of questions.  This has the same value as the %%TOTAL%% Variable on the Final Screen.<\/div><\/li><li id='field_1_4' class='gfield mtq_percentage field_sublabel_below field_description_below gfield_visibility_visible' ><label class='gfield_label' for='input_1_4' >Percentage<\/label><div class='ginput_container ginput_container_number'><input name='input_4' id='input_1_4' type='text'    value='' class='medium' tabindex='6'      aria-invalid=\"false\"\/><\/div><div class='gfield_description'>Correct answer percentage.  This has the same value as the %%PERCENTAGE%% Variable on the Final Screen.<\/div><\/li><li id='field_1_5' class='gfield mtq_wrong_answers field_sublabel_below field_description_below gfield_visibility_visible' ><label class='gfield_label' for='input_1_5' >Wrong Answers<\/label><div class='ginput_container ginput_container_number'><input name='input_5' id='input_1_5' type='text'    value='' class='medium' tabindex='7'      aria-invalid=\"false\"\/><\/div><div class='gfield_description'>Number of wrong answers.  This has the same value as the %%WRONG_ANSWERS%% Variable on the Final Screen.<\/div><\/li><li id='field_1_7' class='gfield mtq_time_allowed field_sublabel_below field_description_below gfield_visibility_visible' ><label class='gfield_label' for='input_1_7' >Time Allowed (Seconds)<\/label><div class='ginput_container ginput_container_number'><input name='input_7' id='input_1_7' type='text'    value='' class='medium' tabindex='8'      aria-invalid=\"false\"\/><\/div><div class='gfield_description'>Time allowed (Requires timer add on).  This has the same value as the %%TIME_ALLOWED%% Variable on the Final Screen.<\/div><\/li><li id='field_1_8' class='gfield mtq_time_used field_sublabel_below field_description_below gfield_visibility_visible' ><label class='gfield_label' for='input_1_8' >Time Used (Seconds)<\/label><div class='ginput_container ginput_container_number'><input name='input_8' id='input_1_8' type='text'    value='' class='medium' tabindex='9'      aria-invalid=\"false\"\/><\/div><div class='gfield_description'>Time used (Requires timer add on).  This has the same value as the %%TIME_USED%% Variable on the Final Screen.<\/div><\/li>\n                            <\/ul><\/div>\n        <div class='gform_footer top_label'> <input type='submit' id='gform_submit_button_1' class='gform_button button' value='Submit' tabindex='10' onclick='if(window[\"gf_submitting_1\"]){return false;}  window[\"gf_submitting_1\"]=true;  ' onkeypress='if( event.keyCode == 13 ){ if(window[\"gf_submitting_1\"]){return false;} window[\"gf_submitting_1\"]=true;  jQuery(\"#gform_1\").trigger(\"submit\",[true]); }' \/> <input type='hidden' name='gform_ajax' value='form_id=1&amp;title=1&amp;description=1&amp;tabindex=1' \/>\n            <input type='hidden' class='gform_hidden' name='is_submit_1' value='1' \/>\n            <input type='hidden' class='gform_hidden' name='gform_submit' value='1' \/>\n            \n            <input type='hidden' class='gform_hidden' name='gform_unique_id' value='' \/>\n            <input type='hidden' class='gform_hidden' 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{gformInitDatepicker();}if(window['gformInitPriceFields']) {gformInitPriceFields();}var current_page = jQuery('#gform_source_page_number_1').val();gformInitSpinner( 1, 'https:\/\/www.classadrivers.com\/become-a-truck-driver\/wp-content\/plugins\/gravityforms\/images\/spinner.gif' );jQuery(document).trigger('gform_page_loaded', [1, current_page]);window['gf_submitting_1'] = false;}else if(!is_redirect){var confirmation_content = jQuery(this).contents().find('.GF_AJAX_POSTBACK').html();if(!confirmation_content){confirmation_content = contents;}setTimeout(function(){jQuery('#gform_wrapper_1').replaceWith(confirmation_content);jQuery(document).scrollTop(jQuery('#gf_1').offset().top);jQuery(document).trigger('gform_confirmation_loaded', [1]);window['gf_submitting_1'] = false;}, 50);}else{jQuery('#gform_1').append(contents);if(window['gformRedirect']) {gformRedirect();}}jQuery(document).trigger('gform_post_render', [1, current_page]);} );} );<\/script><script type='text\/javascript'> if(typeof gf_global == 'undefined') var gf_global = {\"gf_currency_config\":{\"name\":\"U.S. Dollar\",\"symbol_left\":\"$\",\"symbol_right\":\"\",\"symbol_padding\":\"\",\"thousand_separator\":\",\",\"decimal_separator\":\".\",\"decimals\":2},\"base_url\":\"https:\\\/\\\/www.classadrivers.com\\\/become-a-truck-driver\\\/wp-content\\\/plugins\\\/gravityforms\",\"number_formats\":[],\"spinnerUrl\":\"https:\\\/\\\/www.classadrivers.com\\\/become-a-truck-driver\\\/wp-content\\\/plugins\\\/gravityforms\\\/images\\\/spinner.gif\"};jQuery(document).bind('gform_post_render', function(event, formId, currentPage){if(formId == 1) {} } );jQuery(document).bind('gform_post_conditional_logic', function(event, formId, fields, isInit){} );<\/script><script type='text\/javascript'> jQuery(document).ready(function(){jQuery(document).trigger('gform_post_render', [1, 1]) } ); <\/script> <\/div>\r\n     <div id=\"mtq_quiz_results_highlight-1\" class=\"mtq_quiz_results_highlight\">\r\n  Your answers are highlighted below.  <\/div> <\/div>\r\n    \r\n  <!-- root element for mtqscrollable -->\r\n\r\n  <div id=\"mtq_question_container-1\" >\r\n  <div class='mtqscrollable' id='mtq_scroll_container-1'>\r\n        <!-- root element for the items -->\r\n    \r\n    <div id=\"mtq_scroll_items_container-1\" class=\"items\">\r\n            <div class='mtq_question mtq_scroll_item-1' id='mtq_question-1-1'><table class='mtq_question_heading_table'><tr><td><div class='mtq_question_label '>Question 1<\/div><div id='mtq_stamp-1-1' class='mtq_stamp'><\/div><\/td><\/tr><\/table><div id='mtq_question_text-1-1' class='mtq_question_text'><p>What will happen if the service air line comes apart while you are driving a combination vehicle?<\/p><\/div><table class='mtq_answer_table'><colgroup><col class='mtq_oce_first'\/><\/colgroup><tr id='mtq_row-1-1-1' onclick='mtq_button_click(1,1,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-1-1-1' class='mtq_css_letter_button mtq_letter_button_0'  alt='Question 1, Choice 1'>A<\/div><div id='mtq_marker-1-1-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-1-1-1' class='mtq_answer_text'>nothing at all is going to happen<\/div><\/td><\/tr><tr id='mtq_row-1-2-1' onclick='mtq_button_click(1,2,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-1-2-1' class='mtq_css_letter_button mtq_letter_button_1'  alt='Question 1, Choice 2'>B<\/div><div id='mtq_marker-1-2-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-1-2-1' class='mtq_answer_text'>the emergency trailer brakes will come on<\/div><\/td><\/tr><tr id='mtq_row-1-3-1' onclick='mtq_button_click(1,3,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-1-3-1' class='mtq_css_letter_button mtq_letter_button_2'  alt='Question 1, Choice 3'>C<\/div><div id='mtq_marker-1-3-1' class='mtq_marker mtq_correct_marker' alt='Correct'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-1-3-1' class='mtq_answer_text'>nothing is likely to happen until you put on your brakes<\/div><\/td><\/tr><tr id='mtq_row-1-4-1' onclick='mtq_button_click(1,4,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-1-4-1' class='mtq_css_letter_button mtq_letter_button_3'  alt='Question 1, Choice 4'>D<\/div><div id='mtq_marker-1-4-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-1-4-1' class='mtq_answer_text'>the trailer's air tank will exhaust through the open line<\/div><\/td><\/tr><\/table><\/div><div class='mtq_question mtq_scroll_item-1' id='mtq_question-2-1'><table class='mtq_question_heading_table'><tr><td><div class='mtq_question_label '>Question 2<\/div><div id='mtq_stamp-2-1' class='mtq_stamp'><\/div><\/td><\/tr><\/table><div id='mtq_question_text-2-1' class='mtq_question_text'><p>When uncoupling, it's a good practice to<\/p><\/div><table class='mtq_answer_table'><colgroup><col class='mtq_oce_first'\/><\/colgroup><tr id='mtq_row-2-1-1' onclick='mtq_button_click(2,1,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-2-1-1' class='mtq_css_letter_button mtq_letter_button_0'  alt='Question 2, Choice 1'>A<\/div><div id='mtq_marker-2-1-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-2-1-1' class='mtq_answer_text'>couple the glad hands to dummy couplers <\/div><\/td><\/tr><tr id='mtq_row-2-2-1' onclick='mtq_button_click(2,2,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-2-2-1' class='mtq_css_letter_button mtq_letter_button_1'  alt='Question 2, Choice 2'>B<\/div><div id='mtq_marker-2-2-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-2-2-1' class='mtq_answer_text'>couple the glad hands together<\/div><\/td><\/tr><tr id='mtq_row-2-3-1' onclick='mtq_button_click(2,3,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-2-3-1' class='mtq_css_letter_button mtq_letter_button_2'  alt='Question 2, Choice 3'>C<\/div><div id='mtq_marker-2-3-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-2-3-1' class='mtq_answer_text'>hang the electrical cable with the plug end down<\/div><\/td><\/tr><tr id='mtq_row-2-4-1' onclick='mtq_button_click(2,4,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-2-4-1' class='mtq_css_letter_button mtq_letter_button_3'  alt='Question 2, Choice 4'>D<\/div><div id='mtq_marker-2-4-1' class='mtq_marker mtq_correct_marker' alt='Correct'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-2-4-1' class='mtq_answer_text'>all of the above are acceptable<\/div><\/td><\/tr><\/table><\/div><div class='mtq_question mtq_scroll_item-1' id='mtq_question-3-1'><table class='mtq_question_heading_table'><tr><td><div class='mtq_question_label '>Question 3<\/div><div id='mtq_stamp-3-1' class='mtq_stamp'><\/div><\/td><\/tr><\/table><div id='mtq_question_text-3-1' class='mtq_question_text'><p>If you cross your air lines on a new trailer with spring brakes...<\/p><\/div><table class='mtq_answer_table'><colgroup><col class='mtq_oce_first'\/><\/colgroup><tr id='mtq_row-3-1-1' onclick='mtq_button_click(3,1,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-3-1-1' class='mtq_css_letter_button mtq_letter_button_0'  alt='Question 3, Choice 1'>A<\/div><div id='mtq_marker-3-1-1' class='mtq_marker mtq_correct_marker' alt='Correct'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-3-1-1' class='mtq_answer_text'>you won't be able to release the trailer brakes<\/div><\/td><\/tr><tr id='mtq_row-3-2-1' onclick='mtq_button_click(3,2,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-3-2-1' class='mtq_css_letter_button mtq_letter_button_1'  alt='Question 3, Choice 2'>B<\/div><div id='mtq_marker-3-2-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-3-2-1' class='mtq_answer_text'>you won't be able to release the tractor brakes<\/div><\/td><\/tr><tr id='mtq_row-3-3-1' onclick='mtq_button_click(3,3,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-3-3-1' class='mtq_css_letter_button mtq_letter_button_2'  alt='Question 3, Choice 3'>C<\/div><div id='mtq_marker-3-3-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-3-3-1' class='mtq_answer_text'>you'll have no way of knowing there's a problem<\/div><\/td><\/tr><tr id='mtq_row-3-4-1' onclick='mtq_button_click(3,4,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-3-4-1' class='mtq_css_letter_button mtq_letter_button_3'  alt='Question 3, Choice 4'>D<\/div><div id='mtq_marker-3-4-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-3-4-1' class='mtq_answer_text'>you won't have any operational brakes <\/div><\/td><\/tr><\/table><\/div><div class='mtq_question mtq_scroll_item-1' id='mtq_question-4-1'><table class='mtq_question_heading_table'><tr><td><div class='mtq_question_label '>Question 4<\/div><div id='mtq_stamp-4-1' class='mtq_stamp'><\/div><\/td><\/tr><\/table><div id='mtq_question_text-4-1' class='mtq_question_text'><p>When traveling under 40 mph, you should follow other vehicles...<\/p><\/div><table class='mtq_answer_table'><colgroup><col class='mtq_oce_first'\/><\/colgroup><tr id='mtq_row-4-1-1' onclick='mtq_button_click(4,1,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-4-1-1' class='mtq_css_letter_button mtq_letter_button_0'  alt='Question 4, Choice 1'>A<\/div><div id='mtq_marker-4-1-1' class='mtq_marker mtq_correct_marker' alt='Correct'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-4-1-1' class='mtq_answer_text'>With a distance of one second for every ten feet of your vehicle length<\/div><\/td><\/tr><tr id='mtq_row-4-2-1' onclick='mtq_button_click(4,2,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-4-2-1' class='mtq_css_letter_button mtq_letter_button_1'  alt='Question 4, Choice 2'>B<\/div><div id='mtq_marker-4-2-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-4-2-1' class='mtq_answer_text'>As close as possible so others don't cut in<\/div><\/td><\/tr><tr id='mtq_row-4-3-1' onclick='mtq_button_click(4,3,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-4-3-1' class='mtq_css_letter_button mtq_letter_button_2'  alt='Question 4, Choice 3'>C<\/div><div id='mtq_marker-4-3-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-4-3-1' class='mtq_answer_text'>Only during the day<\/div><\/td><\/tr><tr id='mtq_row-4-4-1' onclick='mtq_button_click(4,4,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-4-4-1' class='mtq_css_letter_button mtq_letter_button_3'  alt='Question 4, Choice 4'>D<\/div><div id='mtq_marker-4-4-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-4-4-1' class='mtq_answer_text'>With a distance of one second for every twenty feet of your vehicle length<\/div><\/td><\/tr><\/table><\/div><div class='mtq_question mtq_scroll_item-1' id='mtq_question-5-1'><table class='mtq_question_heading_table'><tr><td><div class='mtq_question_label '>Question 5<\/div><div id='mtq_stamp-5-1' class='mtq_stamp'><\/div><\/td><\/tr><\/table><div id='mtq_question_text-5-1' class='mtq_question_text'><p>In order to supply air to the trailer, you must first...<\/p><\/div><table class='mtq_answer_table'><colgroup><col class='mtq_oce_first'\/><\/colgroup><tr id='mtq_row-5-1-1' onclick='mtq_button_click(5,1,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-5-1-1' class='mtq_css_letter_button mtq_letter_button_0'  alt='Question 5, Choice 1'>A<\/div><div id='mtq_marker-5-1-1' class='mtq_marker mtq_correct_marker' alt='Correct'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-5-1-1' class='mtq_answer_text'>Push in the tractor protection valve<\/div><\/td><\/tr><tr id='mtq_row-5-2-1' onclick='mtq_button_click(5,2,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-5-2-1' class='mtq_css_letter_button mtq_letter_button_1'  alt='Question 5, Choice 2'>B<\/div><div id='mtq_marker-5-2-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-5-2-1' class='mtq_answer_text'>Pull out the \"air supply' knob<\/div><\/td><\/tr><tr id='mtq_row-5-3-1' onclick='mtq_button_click(5,3,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-5-3-1' class='mtq_css_letter_button mtq_letter_button_2'  alt='Question 5, Choice 3'>C<\/div><div id='mtq_marker-5-3-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-5-3-1' class='mtq_answer_text'>Stop engine so you can hear the brakes<\/div><\/td><\/tr><tr id='mtq_row-5-4-1' onclick='mtq_button_click(5,4,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-5-4-1' class='mtq_css_letter_button mtq_letter_button_3'  alt='Question 5, Choice 4'>D<\/div><div id='mtq_marker-5-4-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-5-4-1' class='mtq_answer_text'>Cross the air lines to check for leaks<\/div><\/td><\/tr><\/table><\/div><div class='mtq_question mtq_scroll_item-1' id='mtq_question-6-1'><table class='mtq_question_heading_table'><tr><td><div class='mtq_question_label '>Question 6<\/div><div id='mtq_stamp-6-1' class='mtq_stamp'><\/div><\/td><\/tr><\/table><div id='mtq_question_text-6-1' class='mtq_question_text'><p>If one of the glad hands on your blue air line is missing a seal...<\/p><\/div><table class='mtq_answer_table'><colgroup><col class='mtq_oce_first'\/><\/colgroup><tr id='mtq_row-6-1-1' onclick='mtq_button_click(6,1,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-6-1-1' class='mtq_css_letter_button mtq_letter_button_0'  alt='Question 6, Choice 1'>A<\/div><div id='mtq_marker-6-1-1' class='mtq_marker mtq_correct_marker' alt='Correct'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-6-1-1' class='mtq_answer_text'>you might end up with a service line air leak<\/div><\/td><\/tr><tr id='mtq_row-6-2-1' onclick='mtq_button_click(6,2,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-6-2-1' class='mtq_css_letter_button mtq_letter_button_1'  alt='Question 6, Choice 2'>B<\/div><div id='mtq_marker-6-2-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-6-2-1' class='mtq_answer_text'>it's not a major problem and you should continue coupling<\/div><\/td><\/tr><tr id='mtq_row-6-3-1' onclick='mtq_button_click(6,3,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-6-3-1' class='mtq_css_letter_button mtq_letter_button_2'  alt='Question 6, Choice 3'>C<\/div><div id='mtq_marker-6-3-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-6-3-1' class='mtq_answer_text'>take one off the red air line and use that as a temporary replacement<\/div><\/td><\/tr><tr id='mtq_row-6-4-1' onclick='mtq_button_click(6,4,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-6-4-1' class='mtq_css_letter_button mtq_letter_button_3'  alt='Question 6, Choice 4'>D<\/div><div id='mtq_marker-6-4-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-6-4-1' class='mtq_answer_text'>you could experience an emergency line air leak <\/div><\/td><\/tr><\/table><\/div><div class='mtq_question mtq_scroll_item-1' id='mtq_question-7-1'><table class='mtq_question_heading_table'><tr><td><div class='mtq_question_label '>Question 7<\/div><div id='mtq_stamp-7-1' class='mtq_stamp'><\/div><\/td><\/tr><\/table><div id='mtq_question_text-7-1' class='mtq_question_text'><p>When you inspect the coupling, check to ensure that...<\/p><\/div><table class='mtq_answer_table'><colgroup><col class='mtq_oce_first'\/><\/colgroup><tr id='mtq_row-7-1-1' onclick='mtq_button_click(7,1,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-7-1-1' class='mtq_css_letter_button mtq_letter_button_0'  alt='Question 7, Choice 1'>A<\/div><div id='mtq_marker-7-1-1' class='mtq_marker mtq_correct_marker' alt='Correct'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-7-1-1' class='mtq_answer_text'>there's a little slack in the air lines<\/div><\/td><\/tr><tr id='mtq_row-7-2-1' onclick='mtq_button_click(7,2,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-7-2-1' class='mtq_css_letter_button mtq_letter_button_1'  alt='Question 7, Choice 2'>B<\/div><div id='mtq_marker-7-2-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-7-2-1' class='mtq_answer_text'>there's no slack in the air lines <\/div><\/td><\/tr><tr id='mtq_row-7-3-1' onclick='mtq_button_click(7,3,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-7-3-1' class='mtq_css_letter_button mtq_letter_button_2'  alt='Question 7, Choice 3'>C<\/div><div id='mtq_marker-7-3-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-7-3-1' class='mtq_answer_text'>the landing gear handle is hanging free<\/div><\/td><\/tr><tr id='mtq_row-7-4-1' onclick='mtq_button_click(7,4,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-7-4-1' class='mtq_css_letter_button mtq_letter_button_3'  alt='Question 7, Choice 4'>D<\/div><div id='mtq_marker-7-4-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-7-4-1' class='mtq_answer_text'>the electrical cable is unplugged<\/div><\/td><\/tr><\/table><\/div><div class='mtq_question mtq_scroll_item-1' id='mtq_question-8-1'><table class='mtq_question_heading_table'><tr><td><div class='mtq_question_label '>Question 8<\/div><div id='mtq_stamp-8-1' class='mtq_stamp'><\/div><\/td><\/tr><\/table><div id='mtq_question_text-8-1' class='mtq_question_text'><p>What is the correct setup for shut-off valves?<\/p><\/div><table class='mtq_answer_table'><colgroup><col class='mtq_oce_first'\/><\/colgroup><tr id='mtq_row-8-1-1' onclick='mtq_button_click(8,1,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-8-1-1' class='mtq_css_letter_button mtq_letter_button_0'  alt='Question 8, Choice 1'>A<\/div><div id='mtq_marker-8-1-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-8-1-1' class='mtq_answer_text'>All shut-off valves should be closed.<\/div><\/td><\/tr><tr id='mtq_row-8-2-1' onclick='mtq_button_click(8,2,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-8-2-1' class='mtq_css_letter_button mtq_letter_button_1'  alt='Question 8, Choice 2'>B<\/div><div id='mtq_marker-8-2-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-8-2-1' class='mtq_answer_text'>The rear trailers shut-off valves open and the front closed<\/div><\/td><\/tr><tr id='mtq_row-8-3-1' onclick='mtq_button_click(8,3,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-8-3-1' class='mtq_css_letter_button mtq_letter_button_2'  alt='Question 8, Choice 3'>C<\/div><div id='mtq_marker-8-3-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-8-3-1' class='mtq_answer_text'>All shut-off valves should be open.<\/div><\/td><\/tr><tr id='mtq_row-8-4-1' onclick='mtq_button_click(8,4,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-8-4-1' class='mtq_css_letter_button mtq_letter_button_3'  alt='Question 8, Choice 4'>D<\/div><div id='mtq_marker-8-4-1' class='mtq_marker mtq_correct_marker' alt='Correct'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-8-4-1' class='mtq_answer_text'>The front trailers shut-off valves open and the rear closed<\/div><\/td><\/tr><\/table><\/div><div class='mtq_question mtq_scroll_item-1' id='mtq_question-9-1'><table class='mtq_question_heading_table'><tr><td><div class='mtq_question_label '>Question 9<\/div><div id='mtq_stamp-9-1' class='mtq_stamp'><\/div><\/td><\/tr><\/table><div id='mtq_question_text-9-1' class='mtq_question_text'><p>If the trailer is too high when you try to couple, what may happen?<\/p><\/div><table class='mtq_answer_table'><colgroup><col class='mtq_oce_first'\/><\/colgroup><tr id='mtq_row-9-1-1' onclick='mtq_button_click(9,1,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-9-1-1' class='mtq_css_letter_button mtq_letter_button_0'  alt='Question 9, Choice 1'>A<\/div><div id='mtq_marker-9-1-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-9-1-1' class='mtq_answer_text'>The trailer may tip and flip over.<\/div><\/td><\/tr><tr id='mtq_row-9-2-1' onclick='mtq_button_click(9,2,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-9-2-1' class='mtq_css_letter_button mtq_letter_button_1'  alt='Question 9, Choice 2'>B<\/div><div id='mtq_marker-9-2-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-9-2-1' class='mtq_answer_text'>All of these<\/div><\/td><\/tr><tr id='mtq_row-9-3-1' onclick='mtq_button_click(9,3,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-9-3-1' class='mtq_css_letter_button mtq_letter_button_2'  alt='Question 9, Choice 3'>C<\/div><div id='mtq_marker-9-3-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-9-3-1' class='mtq_answer_text'>The king pin may fall off.<\/div><\/td><\/tr><tr id='mtq_row-9-4-1' onclick='mtq_button_click(9,4,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-9-4-1' class='mtq_css_letter_button mtq_letter_button_3'  alt='Question 9, Choice 4'>D<\/div><div id='mtq_marker-9-4-1' class='mtq_marker mtq_correct_marker' alt='Correct'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-9-4-1' class='mtq_answer_text'>It may not couple correctly.<\/div><\/td><\/tr><\/table><\/div><div class='mtq_question mtq_scroll_item-1' id='mtq_question-10-1'><table class='mtq_question_heading_table'><tr><td><div class='mtq_question_label '>Question 10<\/div><div id='mtq_stamp-10-1' class='mtq_stamp'><\/div><\/td><\/tr><\/table><div id='mtq_question_text-10-1' class='mtq_question_text'><p>What is the emergency air line for?<\/p><\/div><table class='mtq_answer_table'><colgroup><col class='mtq_oce_first'\/><\/colgroup><tr id='mtq_row-10-1-1' onclick='mtq_button_click(10,1,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-10-1-1' class='mtq_css_letter_button mtq_letter_button_0'  alt='Question 10, Choice 1'>A<\/div><div id='mtq_marker-10-1-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-10-1-1' class='mtq_answer_text'>None of these<\/div><\/td><\/tr><tr id='mtq_row-10-2-1' onclick='mtq_button_click(10,2,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-10-2-1' class='mtq_css_letter_button mtq_letter_button_1'  alt='Question 10, Choice 2'>B<\/div><div id='mtq_marker-10-2-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-10-2-1' class='mtq_answer_text'>It supplies air to the tractor air tanks and controls the service brakes on combination vehicles.<\/div><\/td><\/tr><tr id='mtq_row-10-3-1' onclick='mtq_button_click(10,3,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-10-3-1' class='mtq_css_letter_button mtq_letter_button_2'  alt='Question 10, Choice 3'>C<\/div><div id='mtq_marker-10-3-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-10-3-1' class='mtq_answer_text'>It supplies air to the tractor air tanks and controls the emergency brakes on combination vehicles.<\/div><\/td><\/tr><tr id='mtq_row-10-4-1' onclick='mtq_button_click(10,4,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-10-4-1' class='mtq_css_letter_button mtq_letter_button_3'  alt='Question 10, Choice 4'>D<\/div><div id='mtq_marker-10-4-1' class='mtq_marker mtq_correct_marker' alt='Correct'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-10-4-1' class='mtq_answer_text'>It supplies air to the trailer air tanks and controls the emergency brakes on combination vehicles.<\/div><\/td><\/tr><tr id='mtq_row-10-5-1' onclick='mtq_button_click(10,5,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-10-5-1' class='mtq_css_letter_button mtq_letter_button_4'  alt='Question 10, Choice 5'>E<\/div><div id='mtq_marker-10-5-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-10-5-1' class='mtq_answer_text'>It supplies air to the trailer air tanks and controls the service brakes on combination vehicles.<\/div><\/td><\/tr><\/table><\/div><div class='mtq_question mtq_scroll_item-1' id='mtq_question-11-1'><table class='mtq_question_heading_table'><tr><td><div class='mtq_question_label '>Question 11<\/div><div id='mtq_stamp-11-1' class='mtq_stamp'><\/div><\/td><\/tr><\/table><div id='mtq_question_text-11-1' class='mtq_question_text'><p>Two things that are important to prevent rollover are _______.<\/p><\/div><table class='mtq_answer_table'><colgroup><col class='mtq_oce_first'\/><\/colgroup><tr id='mtq_row-11-1-1' onclick='mtq_button_click(11,1,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-11-1-1' class='mtq_css_letter_button mtq_letter_button_0'  alt='Question 11, Choice 1'>A<\/div><div id='mtq_marker-11-1-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-11-1-1' class='mtq_answer_text'>....the weight and length of the vehicle<\/div><\/td><\/tr><tr id='mtq_row-11-2-1' onclick='mtq_button_click(11,2,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-11-2-1' class='mtq_css_letter_button mtq_letter_button_1'  alt='Question 11, Choice 2'>B<\/div><div id='mtq_marker-11-2-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-11-2-1' class='mtq_answer_text'>...keeping an evenly loaded trailer and keeping properly inflated tires<\/div><\/td><\/tr><tr id='mtq_row-11-3-1' onclick='mtq_button_click(11,3,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-11-3-1' class='mtq_css_letter_button mtq_letter_button_2'  alt='Question 11, Choice 3'>C<\/div><div id='mtq_marker-11-3-1' class='mtq_marker mtq_correct_marker' alt='Correct'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-11-3-1' class='mtq_answer_text'>...keeping the cargo as close to the ground as possible and driving slowly around turns<\/div><\/td><\/tr><tr id='mtq_row-11-4-1' onclick='mtq_button_click(11,4,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-11-4-1' class='mtq_css_letter_button mtq_letter_button_3'  alt='Question 11, Choice 4'>D<\/div><div id='mtq_marker-11-4-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-11-4-1' class='mtq_answer_text'>...keeping the cargo center of gravity as high as possible and driving slowly around turns<\/div><\/td><\/tr><\/table><\/div><div class='mtq_question mtq_scroll_item-1' id='mtq_question-12-1'><table class='mtq_question_heading_table'><tr><td><div class='mtq_question_label '>Question 12<\/div><div id='mtq_stamp-12-1' class='mtq_stamp'><\/div><\/td><\/tr><\/table><div id='mtq_question_text-12-1' class='mtq_question_text'><p>The trailer hand valve should be used...<\/p><\/div><table class='mtq_answer_table'><colgroup><col class='mtq_oce_first'\/><\/colgroup><tr id='mtq_row-12-1-1' onclick='mtq_button_click(12,1,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-12-1-1' class='mtq_css_letter_button mtq_letter_button_0'  alt='Question 12, Choice 1'>A<\/div><div id='mtq_marker-12-1-1' class='mtq_marker mtq_correct_marker' alt='Correct'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-12-1-1' class='mtq_answer_text'>Only to test the trailer brakes <\/div><\/td><\/tr><tr id='mtq_row-12-2-1' onclick='mtq_button_click(12,2,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-12-2-1' class='mtq_css_letter_button mtq_letter_button_1'  alt='Question 12, Choice 2'>B<\/div><div id='mtq_marker-12-2-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-12-2-1' class='mtq_answer_text'>Both B & C above<\/div><\/td><\/tr><tr id='mtq_row-12-3-1' onclick='mtq_button_click(12,3,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-12-3-1' class='mtq_css_letter_button mtq_letter_button_2'  alt='Question 12, Choice 3'>C<\/div><div id='mtq_marker-12-3-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-12-3-1' class='mtq_answer_text'>Only when parking<\/div><\/td><\/tr><tr id='mtq_row-12-4-1' onclick='mtq_button_click(12,4,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-12-4-1' class='mtq_css_letter_button mtq_letter_button_3'  alt='Question 12, Choice 4'>D<\/div><div id='mtq_marker-12-4-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-12-4-1' class='mtq_answer_text'>Only at highway speeds <\/div><\/td><\/tr><\/table><\/div><div class='mtq_question mtq_scroll_item-1' id='mtq_question-13-1'><table class='mtq_question_heading_table'><tr><td><div class='mtq_question_label '>Question 13<\/div><div id='mtq_stamp-13-1' class='mtq_stamp'><\/div><\/td><\/tr><\/table><div id='mtq_question_text-13-1' class='mtq_question_text'><p>Which one of the following statements about tractor protection valves is NOT true?<\/p><\/div><table class='mtq_answer_table'><colgroup><col class='mtq_oce_first'\/><\/colgroup><tr id='mtq_row-13-1-1' onclick='mtq_button_click(13,1,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-13-1-1' class='mtq_css_letter_button mtq_letter_button_0'  alt='Question 13, Choice 1'>A<\/div><div id='mtq_marker-13-1-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-13-1-1' class='mtq_answer_text'>It will close automatically if air pressure is low<\/div><\/td><\/tr><tr id='mtq_row-13-2-1' onclick='mtq_button_click(13,2,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-13-2-1' class='mtq_css_letter_button mtq_letter_button_1'  alt='Question 13, Choice 2'>B<\/div><div id='mtq_marker-13-2-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-13-2-1' class='mtq_answer_text'>It keeps air in the tractor in the event the trailer air leaks<\/div><\/td><\/tr><tr id='mtq_row-13-3-1' onclick='mtq_button_click(13,3,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-13-3-1' class='mtq_css_letter_button mtq_letter_button_2'  alt='Question 13, Choice 3'>C<\/div><div id='mtq_marker-13-3-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-13-3-1' class='mtq_answer_text'>It is controlled by the trailer air supply valve in the cab<\/div><\/td><\/tr><tr id='mtq_row-13-4-1' onclick='mtq_button_click(13,4,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-13-4-1' class='mtq_css_letter_button mtq_letter_button_3'  alt='Question 13, Choice 4'>D<\/div><div id='mtq_marker-13-4-1' class='mtq_marker mtq_correct_marker' alt='Correct'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-13-4-1' class='mtq_answer_text'>When it closes it allows air to leak from the tractor line<\/div><\/td><\/tr><\/table><\/div><div class='mtq_question mtq_scroll_item-1' id='mtq_question-14-1'><table class='mtq_question_heading_table'><tr><td><div class='mtq_question_label '>Question 14<\/div><div id='mtq_stamp-14-1' class='mtq_stamp'><\/div><\/td><\/tr><\/table><div id='mtq_question_text-14-1' class='mtq_question_text'><p>Which of the following is the definition of \"off-tracking\"?<\/p><\/div><table class='mtq_answer_table'><colgroup><col class='mtq_oce_first'\/><\/colgroup><tr id='mtq_row-14-1-1' onclick='mtq_button_click(14,1,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-14-1-1' class='mtq_css_letter_button mtq_letter_button_0'  alt='Question 14, Choice 1'>A<\/div><div id='mtq_marker-14-1-1' class='mtq_marker mtq_correct_marker' alt='Correct'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-14-1-1' class='mtq_answer_text'>When the rear wheels follow a different path than the front wheels<\/div><\/td><\/tr><tr id='mtq_row-14-2-1' onclick='mtq_button_click(14,2,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-14-2-1' class='mtq_css_letter_button mtq_letter_button_1'  alt='Question 14, Choice 2'>B<\/div><div id='mtq_marker-14-2-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-14-2-1' class='mtq_answer_text'>When the rear wheels go into a skid and the front wheels continue in a straight line<\/div><\/td><\/tr><tr id='mtq_row-14-3-1' onclick='mtq_button_click(14,3,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-14-3-1' class='mtq_css_letter_button mtq_letter_button_2'  alt='Question 14, Choice 3'>C<\/div><div id='mtq_marker-14-3-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-14-3-1' class='mtq_answer_text'>None of these<\/div><\/td><\/tr><tr id='mtq_row-14-4-1' onclick='mtq_button_click(14,4,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-14-4-1' class='mtq_css_letter_button mtq_letter_button_3'  alt='Question 14, Choice 4'>D<\/div><div id='mtq_marker-14-4-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-14-4-1' class='mtq_answer_text'>When the front wheels go one direction and the trailer wheels go in the other direction<\/div><\/td><\/tr><\/table><\/div><div class='mtq_question mtq_scroll_item-1' id='mtq_question-15-1'><table class='mtq_question_heading_table'><tr><td><div class='mtq_question_label '>Question 15<\/div><div id='mtq_stamp-15-1' class='mtq_stamp'><\/div><\/td><\/tr><\/table><div id='mtq_question_text-15-1' class='mtq_question_text'><p>After coupling, there should be _____ space between the upper and lower fifth wheel<\/p><\/div><table class='mtq_answer_table'><colgroup><col class='mtq_oce_first'\/><\/colgroup><tr id='mtq_row-15-1-1' onclick='mtq_button_click(15,1,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-15-1-1' class='mtq_css_letter_button mtq_letter_button_0'  alt='Question 15, Choice 1'>A<\/div><div id='mtq_marker-15-1-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-15-1-1' class='mtq_answer_text'>...1\/8 inch<\/div><\/td><\/tr><tr id='mtq_row-15-2-1' onclick='mtq_button_click(15,2,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-15-2-1' class='mtq_css_letter_button mtq_letter_button_1'  alt='Question 15, Choice 2'>B<\/div><div id='mtq_marker-15-2-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-15-2-1' class='mtq_answer_text'>...1\/16 inch<\/div><\/td><\/tr><tr id='mtq_row-15-3-1' onclick='mtq_button_click(15,3,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-15-3-1' class='mtq_css_letter_button mtq_letter_button_2'  alt='Question 15, Choice 3'>C<\/div><div id='mtq_marker-15-3-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-15-3-1' class='mtq_answer_text'>...1\/4 inch<\/div><\/td><\/tr><tr id='mtq_row-15-4-1' onclick='mtq_button_click(15,4,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-15-4-1' class='mtq_css_letter_button mtq_letter_button_3'  alt='Question 15, Choice 4'>D<\/div><div id='mtq_marker-15-4-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-15-4-1' class='mtq_answer_text'>...1\/32 inch<\/div><\/td><\/tr><tr id='mtq_row-15-5-1' onclick='mtq_button_click(15,5,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-15-5-1' class='mtq_css_letter_button mtq_letter_button_4'  alt='Question 15, Choice 5'>E<\/div><div id='mtq_marker-15-5-1' class='mtq_marker mtq_correct_marker' alt='Correct'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-15-5-1' class='mtq_answer_text'>None of these<\/div><\/td><\/tr><\/table><\/div><div class='mtq_question mtq_scroll_item-1' id='mtq_question-16-1'><table class='mtq_question_heading_table'><tr><td><div class='mtq_question_label '>Question 16<\/div><div id='mtq_stamp-16-1' class='mtq_stamp'><\/div><\/td><\/tr><\/table><div id='mtq_question_text-16-1' class='mtq_question_text'><p>Which trailer is most likely to turn over when you turn suddenly while pulling double trailers?<\/p><\/div><table class='mtq_answer_table'><colgroup><col class='mtq_oce_first'\/><\/colgroup><tr id='mtq_row-16-1-1' onclick='mtq_button_click(16,1,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-16-1-1' class='mtq_css_letter_button mtq_letter_button_0'  alt='Question 16, Choice 1'>A<\/div><div id='mtq_marker-16-1-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-16-1-1' class='mtq_answer_text'>Both trailers<\/div><\/td><\/tr><tr id='mtq_row-16-2-1' onclick='mtq_button_click(16,2,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-16-2-1' class='mtq_css_letter_button mtq_letter_button_1'  alt='Question 16, Choice 2'>B<\/div><div id='mtq_marker-16-2-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-16-2-1' class='mtq_answer_text'>Neither trailer is more likely to turn over.<\/div><\/td><\/tr><tr id='mtq_row-16-3-1' onclick='mtq_button_click(16,3,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-16-3-1' class='mtq_css_letter_button mtq_letter_button_2'  alt='Question 16, Choice 3'>C<\/div><div id='mtq_marker-16-3-1' class='mtq_marker mtq_correct_marker' alt='Correct'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-16-3-1' class='mtq_answer_text'>The rear trailer<\/div><\/td><\/tr><tr id='mtq_row-16-4-1' onclick='mtq_button_click(16,4,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-16-4-1' class='mtq_css_letter_button mtq_letter_button_3'  alt='Question 16, Choice 4'>D<\/div><div id='mtq_marker-16-4-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-16-4-1' class='mtq_answer_text'>The front trailer<\/div><\/td><\/tr><\/table><\/div><div class='mtq_question mtq_scroll_item-1' id='mtq_question-17-1'><table class='mtq_question_heading_table'><tr><td><div class='mtq_question_label '>Question 17<\/div><div id='mtq_stamp-17-1' class='mtq_stamp'><\/div><\/td><\/tr><\/table><div id='mtq_question_text-17-1' class='mtq_question_text'><p>Before driving, you need to raise the landing gear only until it just lifts off the pavement.<\/p><\/div><table class='mtq_answer_table'><colgroup><col class='mtq_oce_first'\/><\/colgroup><tr id='mtq_row-17-1-1' onclick='mtq_button_click(17,1,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-17-1-1' class='mtq_css_letter_button mtq_letter_button_0'  alt='Question 17, Choice 1'>A<\/div><div id='mtq_marker-17-1-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-17-1-1' class='mtq_answer_text'>True<\/div><\/td><\/tr><tr id='mtq_row-17-2-1' onclick='mtq_button_click(17,2,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-17-2-1' class='mtq_css_letter_button mtq_letter_button_1'  alt='Question 17, Choice 2'>B<\/div><div id='mtq_marker-17-2-1' class='mtq_marker mtq_correct_marker' alt='Correct'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-17-2-1' class='mtq_answer_text'>False<\/div><\/td><\/tr><\/table><\/div><div class='mtq_question mtq_scroll_item-1' id='mtq_question-18-1'><table class='mtq_question_heading_table'><tr><td><div class='mtq_question_label '>Question 18<\/div><div id='mtq_stamp-18-1' class='mtq_stamp'><\/div><\/td><\/tr><\/table><div id='mtq_question_text-18-1' class='mtq_question_text'><p>You can damage the landing gear if you...<\/p><\/div><table class='mtq_answer_table'><colgroup><col class='mtq_oce_first'\/><\/colgroup><tr id='mtq_row-18-1-1' onclick='mtq_button_click(18,1,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-18-1-1' class='mtq_css_letter_button mtq_letter_button_0'  alt='Question 18, Choice 1'>A<\/div><div id='mtq_marker-18-1-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-18-1-1' class='mtq_answer_text'>back under the trailer in a straight line<\/div><\/td><\/tr><tr id='mtq_row-18-2-1' onclick='mtq_button_click(18,2,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-18-2-1' class='mtq_css_letter_button mtq_letter_button_1'  alt='Question 18, Choice 2'>B<\/div><div id='mtq_marker-18-2-1' class='mtq_marker mtq_correct_marker' alt='Correct'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-18-2-1' class='mtq_answer_text'>back under the trailer at an angle<\/div><\/td><\/tr><tr id='mtq_row-18-3-1' onclick='mtq_button_click(18,3,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-18-3-1' class='mtq_css_letter_button mtq_letter_button_2'  alt='Question 18, Choice 3'>C<\/div><div id='mtq_marker-18-3-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-18-3-1' class='mtq_answer_text'>position the trailer kingpin in the center of the fifth wheel <\/div><\/td><\/tr><tr id='mtq_row-18-4-1' onclick='mtq_button_click(18,4,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-18-4-1' class='mtq_css_letter_button mtq_letter_button_3'  alt='Question 18, Choice 4'>D<\/div><div id='mtq_marker-18-4-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-18-4-1' class='mtq_answer_text'>align the tractor and trailer<\/div><\/td><\/tr><\/table><\/div><div class='mtq_question mtq_scroll_item-1' id='mtq_question-19-1'><table class='mtq_question_heading_table'><tr><td><div class='mtq_question_label '>Question 19<\/div><div id='mtq_stamp-19-1' class='mtq_stamp'><\/div><\/td><\/tr><\/table><div id='mtq_question_text-19-1' class='mtq_question_text'><p>Which one of the following is controlled by the foot brake?<\/p><\/div><table class='mtq_answer_table'><colgroup><col class='mtq_oce_first'\/><\/colgroup><tr id='mtq_row-19-1-1' onclick='mtq_button_click(19,1,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-19-1-1' class='mtq_css_letter_button mtq_letter_button_0'  alt='Question 19, Choice 1'>A<\/div><div id='mtq_marker-19-1-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-19-1-1' class='mtq_answer_text'>The emergency air line<\/div><\/td><\/tr><tr id='mtq_row-19-2-1' onclick='mtq_button_click(19,2,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-19-2-1' class='mtq_css_letter_button mtq_letter_button_1'  alt='Question 19, Choice 2'>B<\/div><div id='mtq_marker-19-2-1' class='mtq_marker mtq_correct_marker' alt='Correct'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-19-2-1' class='mtq_answer_text'>The service air line<\/div><\/td><\/tr><tr id='mtq_row-19-3-1' onclick='mtq_button_click(19,3,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-19-3-1' class='mtq_css_letter_button mtq_letter_button_2'  alt='Question 19, Choice 3'>C<\/div><div id='mtq_marker-19-3-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-19-3-1' class='mtq_answer_text'>The hose coupler<\/div><\/td><\/tr><tr id='mtq_row-19-4-1' onclick='mtq_button_click(19,4,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-19-4-1' class='mtq_css_letter_button mtq_letter_button_3'  alt='Question 19, Choice 4'>D<\/div><div id='mtq_marker-19-4-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-19-4-1' class='mtq_answer_text'>The shut off valve <\/div><\/td><\/tr><\/table><\/div><div class='mtq_question mtq_scroll_item-1' id='mtq_question-20-1'><table class='mtq_question_heading_table'><tr><td><div class='mtq_question_label '>Question 20<\/div><div id='mtq_stamp-20-1' class='mtq_stamp'><\/div><\/td><\/tr><\/table><div id='mtq_question_text-20-1' class='mtq_question_text'><p>To straighten out a jackknifing trailer, why should you NOT use the trailer hand brake?<\/p><\/div><table class='mtq_answer_table'><colgroup><col class='mtq_oce_first'\/><\/colgroup><tr id='mtq_row-20-1-1' onclick='mtq_button_click(20,1,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-20-1-1' class='mtq_css_letter_button mtq_letter_button_0'  alt='Question 20, Choice 1'>A<\/div><div id='mtq_marker-20-1-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-20-1-1' class='mtq_answer_text'>None of these<\/div><\/td><\/tr><tr id='mtq_row-20-2-1' onclick='mtq_button_click(20,2,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-20-2-1' class='mtq_css_letter_button mtq_letter_button_1'  alt='Question 20, Choice 2'>B<\/div><div id='mtq_marker-20-2-1' class='mtq_marker mtq_correct_marker' alt='Correct'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-20-2-1' class='mtq_answer_text'>The trailer wheels caused the skid in the first place. Once the trailer wheels grip the road again, the trailer will start to follow the tractor and straighten out<\/div><\/td><\/tr><tr id='mtq_row-20-3-1' onclick='mtq_button_click(20,3,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-20-3-1' class='mtq_css_letter_button mtq_letter_button_2'  alt='Question 20, Choice 3'>C<\/div><div id='mtq_marker-20-3-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-20-3-1' class='mtq_answer_text'>This is the only time that you should use the trailer hand brake.<\/div><\/td><\/tr><tr id='mtq_row-20-4-1' onclick='mtq_button_click(20,4,1)' class='mtq_clickable'><td class='mtq_letter_button_td'><div id='mtq_button-20-4-1' class='mtq_css_letter_button mtq_letter_button_3'  alt='Question 20, Choice 4'>D<\/div><div id='mtq_marker-20-4-1' class='mtq_marker mtq_wrong_marker' alt='Wrong'><\/div><\/td><td class='mtq_answer_td'><div id='mtq_answer_text-20-4-1' class='mtq_answer_text'>The tractor wheels caused the skid in the first place. Once the trailer wheels grip the road again, the trailer will start to push the tractor and straighten out.<\/div><\/td><\/tr><\/table><\/div>            <div id=\"mtq_results_request-1\" class=\"mtq_results_request mtq_scroll_item-1\">\r\n        Once you are finished, click the button below. 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Try again!<\/div><input type='hidden' id='mtq_ratingval-5-1' value='80'\/><div id='mtq_rating-5-1' class='mtq_preload'>Great! You passed!<\/div><input type='hidden' id='mtq_ratingval-6-1' value='100'\/><div id='mtq_rating-6-1' class='mtq_preload'>Perfect!<\/div>    <input type=\"hidden\" id=\"mtq_gf_present-1\" value=\"1\"\/>\r\n    <input type=\"hidden\" id=\"mtq_cf7_present-1\" value=\"0\"\/>\r\n    <input type=\"hidden\" id=\"mtq_quiz_in_form-1\" value=\"0\"\/>\r\n    <input type=\"hidden\" id=\"mtq_gf_formid_number-1\" value=\"1\"\/>\r\n\r\n  <\/div>\r\n  \r\n  <!--Variables Div--> \r\n  <!--\/form--> \r\n<\/div>\r\n<!--Quiz area div-->\r\n\r\n\n<p>&nbsp;<\/p>\n<h2 style=\"text-align: center;\"><span style=\"font-size: 24px;\"><strong>About the Combination Vehicles CDL Test<\/strong><\/span><\/h2>\n<h3><span style=\"font-family: georgia,palatino,serif; font-size: 14px;\"><strong>The Combination Vehicles test:<\/strong><\/span><\/h3>\n<ul>\n<li>20 questions.<\/li>\n<li>You need 16 correct answers (80%).<\/li>\n<li>You may be timed. Time limit varies by state.\u00a0<\/li>\n<\/ul>\n<p>For those of you going for the Class A CDL, you will have to pass the written test covering information on combination vehicles. A combination vehicle is defined as any tractor-trailer set up, including a tractor with a single trailer, double trailers, triple trailers, and straight truck with a trailer.\u00a0<\/p>\n<p>While this test is separate from the general knowledge test, these are the vehicles that Class A drivers want to drive. The information tested in the Combination Vehicles test will only qualify you for common combination vehicles, not for doubles and triples. There\u2019s a separate test for those!<\/p>\n<p>The fact that most combination vehicles are typically heavier, longer, and require greater driving skill than single vehicles means that you will need specialized knowledge to safely operate one.<\/p>\n<p>Now, don\u2019t get in a rush to just buzz through the exam. Make sure you read and understand each question before selecting your answer because there are a lot of peculiarities with combination vehicles that can make them very dangerous.<\/p>\n<p>Topics covered in the Combination Vehicles Test are as follows:<\/p>\n<ul>\n<li>Safe driving<\/li>\n<li>Rollover risk<\/li>\n<li>Railroad-highway crossings<\/li>\n<li>Preventing skids<\/li>\n<li>Turning<\/li>\n<li>Backing<\/li>\n<li>Combination vehicle air brakes<\/li>\n<li>Antilock brake systems<\/li>\n<li>Coupling and uncoupling<\/li>\n<li>Inspecting a combination vehicle<\/li>\n<\/ul>\n<p>Be ready to answer a variety of questions. Why should you not use the trailer hand brake to straighten out a jack-knifing trailer? What is off-tracking? Why should you use chocks when parking a trailer? How can you test the trailer service brakes?<\/p>\n<p>&nbsp;<\/p>\n<div class=\"mh-author-box clearfix\">\n\t\t<div class=\"mh-author-box-header\">\n\t\t\t<span class=\"mh-author-box-name\">\n\t\t\t\tAbout The Author\n\t\t\t<\/span>\n\t\t<\/div>\n\t\t<div class=\"mh-author-box-bio\">\n\t\t\tContributor: Luke Nold (Experienced truck driver for 5+ years and published writer for Fleet Magazine).\n\t\t<\/div>\n\t<\/div>\n","protected":false},"excerpt":{"rendered":"<div class=\"mh-excerpt\"><p>Want to review your answers at any time? Submit your <a class=\"mh-excerpt-more\" href=\"https:\/\/www.classadrivers.com\/become-a-truck-driver\/combination-vehicles-cdl-practice-test\/\" title=\"Combination Vehicles CDL Practice Test\">Read More<\/a><\/p>\n<\/div>","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Combination Vehicles CDL Practice Test - Class A Drivers<\/title>\n<meta name=\"description\" content=\"Take our FREE Combination Vehicles CDL Practice Test. Ace your CDL test and start your truck driving career! 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