You may want to contact the state of Texas or check their website for current information. I think their web address is
Home. If you only operate within the state of Texas, you will only need a TXDOT number, which is authority to run intrastate. If you run outside Texas and run interstate, you will need authority from the FMCSA or motor carrier authority (MC). You will also need to set up an IFTA account. If you only run intrastate in Texas you may not need the IFTA account. I would check with Texas and ask them or check their website.