The reg is as follows:
Quote:
§395.3 Maximum driving time for property-carrying vehicles.
b) No motor carrier shall permit or require a driver of a property-carrying commercial motor vehicle to drive, nor shall any driver drive a property-carrying commercial motor vehicle, regardless of the number of motor carriers using the driver's services, for any period after-
(b)(1) Having been on duty 60 hours in any period of 7 consecutive days if the employing motor carrier does not operate commercial motor vehicles every day of the week; or
(b)(2) Having been on duty 70 hours in any period of 8 consecutive days if the employing motor carrier operates commercial motor vehicles every day of the week.
So the key word is DRIVE. There is no limitation on how long you can work on line 4.
However, Your company policy will always trump the DOT regs. Sorry.