Truck Dispatcher TruckDisp Equipment Specifications 2 — Questions and Answers
Question 1: What is the maximum legal gross vehicle weight (GVW) for a standard semi-truck on US Interstate highways?
- 60,000 lbs
- 80,000 lbs (Correct answer)
- 90,000 lbs
- 100,000 lbs
Correct answer: 80,000 lbs
Federal law limits gross vehicle weight to 80,000 lbs on Interstate highways without a special permit.
Question 2: A flatbed trailer's standard deck height above the ground is approximately:
- 36 inches
- 48 inches (Correct answer)
- 60 inches
- 72 inches
Correct answer: 48 inches
Standard flatbed trailers have a deck height of approximately 48 inches (4 feet) from the ground.
Question 3: Which trailer type is best suited for transporting livestock?
- Dry van
- Reefer
- Livestock trailer (Correct answer)
- Lowboy
Correct answer: Livestock trailer
Livestock trailers have ventilation, flooring, and compartments specifically designed for transporting live animals.
Question 4: What does a 'fifth wheel' refer to on a semi-truck?
- A spare tire mounted on the cab
- The coupling device connecting tractor to trailer (Correct answer)
- A steering axle on the trailer
- The rear axle of a tandem set
Correct answer: The coupling device connecting tractor to trailer
The fifth wheel is the horseshoe-shaped coupling plate on the tractor that locks onto the trailer's kingpin.
Question 5: What is the standard interior width of a 53-foot dry van trailer?
- 94 inches
- 98 inches (Correct answer)
- 102 inches
- 110 inches
Correct answer: 98 inches
Standard 53-foot dry van trailers have an interior width of 98 to 99 inches.
Question 6: A tanker truck used to haul gasoline is classified under which DOT hazmat placard category?
- Class 3 Flammable Liquid (Correct answer)
- Class 4 Flammable Solid
- Class 6 Poison
- Class 8 Corrosive
Correct answer: Class 3 Flammable Liquid
Gasoline is a Class 3 Flammable Liquid requiring the corresponding DOT hazmat placard.
Question 7: Which axle configuration is most common on a standard 18-wheeler tractor?
- Single drive axle (6x2)
- Tandem drive axles (6x4) (Correct answer)
- Triple axle (8x4)
- Single steer, single drive (4x2)
Correct answer: Tandem drive axles (6x4)
Most semi-trucks use a 6x4 configuration with one steer axle and two tandem rear drive axles for traction and load capacity.
Truck Dispatcher TruckDisp Equipment Specifications 2
What is the maximum legal gross vehicle weight (GVW) for a standard semi-truck on US Interstate highways?