Certain commercial vehicles have the maximum speed of 55 mph on highways. These include:
What to do when driving a big truck, bus or towing a vehicle?
If you are going to drive a big truck, bus or towing a vehicle, you must stay in the right-hand lane or a lane that is specially marked and designated for slower vehicles. If you are driving on a road with four or more lanes, you may only drive at the two right lanes.
