A straight truck or tractor is a commercial vehicle with a cab and body consisting of one unity; all axles are attached to a single frame.
For Class 8 (trucks weighing 33,001 pounds or more), these vehicles come in one of four options:
- straight truck day cab
- straight truck sleeper cab
- tractor day cab
- tractor sleeper cab
A straight truck day cab is a vehicle with the trailer/body attached to the chassis, and there is no sleeping compartment for the driver(s). These trucks are utilized in more local or regional deliveries or become vocational vehicles like cement or refuse trucks.
A straight truck sleeper cab is a Class 8 vehicle where the trailer/body is attached to the chassis, and there is a sleeping compartment for the driver(s). These trucks are utilized in more specialized, long-haul deliveries.
A Class 8 tractor day cab is a vehicle where the trailer is not attached to the chassis, and there is no sleeping compartment for the driver(s). These trucks are utilized in on-highway short-medium haul, regional deliveries, port, or drayage applications.
A Class 8 tractor sleeper cab is a vehicle where the trailer is not attached to the chassis, and there is a sleeping compartment for the driver(s). These trucks are utilized in the bulk of on-highway freight hauling.
