Truck Dispatcher TruckDisp Equipment Specifications 3

Question 1

What is the maximum legal height for a loaded commercial truck on most US highways?

Accepted Answer

13 feet 6 inches

Answer

The standard maximum height for commercial vehicles on US highways is 13 feet 6 inches (162 inches).

Question 2

A refrigerated trailer (reefer) maintains cargo temperature primarily using:

Accepted Answer

A diesel-powered refrigeration unit mounted on the front wall

Answer

Reefer trailers use a self-contained diesel-powered refrigeration unit (often called a 'reefer unit' or 'Thermo King') mounted on the front nose.

Question 3

What is the purpose of 'landing gear' on a semi-trailer?

Accepted Answer

Retractable legs that support the trailer when uncoupled from the tractor

Answer

Landing gear consists of retractable support legs that hold up the front of the trailer when it is not connected to a tractor.

Question 4

Which trailer is specifically designed to transport vehicles such as cars and SUVs?

Accepted Answer

Auto transport (car hauler) trailer

Answer

Auto transport trailers have multi-level ramps and tie-down systems specifically engineered for vehicle transport.

Question 5

What does 'payload capacity' mean in trucking?

Accepted Answer

The maximum weight of cargo the truck can legally carry

Answer

Payload capacity is the maximum allowable cargo weight, calculated as GVW minus the tare (empty) weight of the vehicle.

Truck Dispatcher Practice Test