1. What is the maximum gross vehicle weight (GVW) allowed on the Interstate Highway System under federal weight limits?

2. What is the maximum weight allowed on a single axle under federal regulations?

3. A semi-trailer has a tandem axle group at the rear carrying 32,000 pounds. The single steer axle carries 12,000 pounds. What is the total gross vehicle weight, and is it within federal limits?

4. A cargo tank is partially filled with liquid. Which characteristic of liquid cargo creates the greatest handling hazard during braking and turning?

5. Under 49 CFR 393, what is the minimum Working Load Limit (WLL) requirement for cargo securement devices?

6. A flatbed trailer is loaded with machinery weighing 15,000 pounds. The cargo is 12 feet long and is not blocked or braced to prevent forward movement. How many tiedowns are required minimum under 49 CFR 393.110?

7. A bridge crossing has a posted weight limit of 40 tons. The driver’s truck has a gross weight of 75,000 pounds. Should the driver cross the bridge?

8. What is the purpose of the Federal Bridge Formula under 23 USC 127?

9. A tank vehicle driver is hauling liquid fertilizer with a high center of gravity. When approaching a curved exit ramp, what should the driver do to minimize rollover risk?

10. A driver needs to secure a 25-foot steel beam weighing 8,000 pounds on a flatbed trailer. The beam is placed on dunnage and is not blocked against forward movement. What is the minimum number of tiedowns required?

11. What types of cargo securement devices are approved for use under 49 CFR Part 393 Subpart I, and what must all devices have to be legally used for cargo restraint?

12. What effect does a high center of gravity in loaded cargo have on commercial motor vehicle handling, and what driving adjustments are required to compensate?

13. A driver has loaded a dry van trailer and positioned most of the heavy cargo toward the rear of the trailer, leaving relatively light weight toward the front near the trailer nose. During the pre-trip inspection, the driver notes that the drive axle weight shows only 10,000 lbs on the CAT scale while the trailer tandem shows 34,000 lbs. What handling effects will this improper weight distribution create, and what should the driver do before departure?

14. A driver is securing a single heavy piece of machinery weighing 12,000 lbs that rests on a flatbed trailer. The cargo has built-in lifting eyes (attachment points) suitable for tiedown attachment. Under 49 CFR Part 393 Subpart I, what is the minimum aggregate Working Load Limit (WLL) required for tiedowns securing this article directly to the vehicle?

15. A driver transporting a load of logs on a flatbed trailer has secured the cargo using four stake pockets with stakes inserted, and has used chains wrapped around the log stack at multiple points. During the 50-mile cargo inspection, the driver notices one chain has loosened by approximately 2 inches. What specific requirements apply to log cargo securement under 49 CFR Part 393 Subpart J, and what action must the driver take?

16. A driver hauling building materials on a flatbed trailer has stopped at a rest area 150 miles into a 400-mile trip. The cargo was checked and adjusted at the 50-mile point with no issues found. Under 49 CFR Part 393, when must the driver re-inspect cargo securement during this trip, and what conditions require immediate inspection outside the scheduled intervals?

17. A driver operating a 5-axle tractor-semitrailer combination measures the following axle spacing: steer axle to drive axle = 12 feet, drive axle to first trailer axle = 4 feet (tandem pair spaced at this bridge distance), trailer tandem axle spacing between the two axles = 4 feet. The total gross weight is 79,500 lbs distributed as: steer axle 11,500 lbs, drive axle 17,000 lbs, trailer tandem 34,000 lbs (each axle at 17,000 lbs). Analyze whether this configuration complies with the federal bridge formula under 49 CFR Section 658.17, and identify any violations.

18. A driver transporting hazardous liquid cargo in a baffled tanker notices during a mountain descent that brake application causes the vehicle to surge forward slightly after initial deceleration. The tank is filled to approximately 85% capacity. The driver must navigate two more curves before reaching level highway. Analyze the factors contributing to this handling characteristic and determine the safest approach for the remaining descent.

19. A flatbed driver is securing a single piece of construction equipment weighing 8,000 lbs. The equipment has no built-in attachment points, so the driver is using indirect securement with chains wrapped over the cargo and attached to anchor points on both sides. The driver has available: four chains rated at 2,500 lbs WLL each, and two chains rated at 4,000 lbs WLL each. Calculate the minimum aggregate WLL needed and determine the optimal chain selection to meet federal requirements with the fewest tiedowns while maintaining a safety margin.

20. A driver with Tank Vehicle (N) endorsement is transporting a chemical load in a smooth bore tanker. The shipper has provided loading documentation showing: product weight 44,000 lbs, tank capacity 50,000 lbs (88% fill), outage (ullage) 12%. The driver weighs the combination at a CAT scale: steer axle 12,000 lbs, drive axle 19,500 lbs, trailer tandem 32,500 lbs, total 64,000 lbs. The route includes 50 miles of mountain highway with 6% grades. Analyze this configuration for compliance issues and identify the driving techniques required for safe transport.

21. What is the difference between GVW (Gross Vehicle Weight) and GVWR (Gross Vehicle Weight Rating), and which value determines legal compliance with federal weight limits?

22. A driver needs to transport a single piece of heavy machinery weighing 95,000 lbs on a flatbed trailer. The standard federal gross weight limit for interstate highways is 80,000 lbs. Under what conditions can this shipment legally proceed, and what documentation is required?

23. A driver weighs a loaded 5-axle tractor-semitrailer at a CAT scale and receives the following readout: steer axle 11,800 lbs, drive axle 22,500 lbs, trailer tandem 31,700 lbs, gross weight 66,000 lbs. The drive axle exceeds the 20,000 lbs single axle limit by 2,500 lbs. The trailer has sliding tandem axles. Describe the correct procedure to redistribute weight and achieve legal axle weights without adjusting cargo inside the trailer.

24. A driver is securing steel beams with sharp edges on a flatbed trailer using synthetic webbing straps rated at 3,000 lbs WLL each. The beam edges have 90-degree angles that could cut or abrade the straps under tension. Under 49 CFR Part 393 Subpart I, what is the requirement for protecting tiedowns from cargo edge damage, and how should the driver comply?

25. A flatbed driver has loaded a single piece of steel fabrication measuring 7 feet in length and weighing 3,000 lbs. The cargo rests on wooden blocking and has no built-in attachment points. Under 49 CFR Part 393 Subpart I, determine the minimum number of tiedowns required for this article and explain the reasoning.

26. A driver is transporting a load of crushed stone on a dump trailer with an open top. The load is level with the top edge of the trailer sides. The route includes 25 miles of interstate highway followed by 15 miles of county roads to the delivery site. Weather forecast shows light winds with gusts up to 15 MPH. Under 49 CFR Part 393 Subpart I, what covering requirements apply to this open-top load?

27. A driver is transporting a single metal coil weighing 22,000 lbs on a flatbed trailer equipped with a metal coil rack (cradle). The coil is placed in the cradle with the eye of the coil oriented vertically (eye-to-the-sky configuration). Under 49 CFR Part 393 Subpart J specialized cargo requirements for metal coils, analyze the securement requirements and determine the correct tiedown configuration.

28. A driver transporting paper rolls on a flatbed trailer has secured each roll using friction mats underneath and two straps over each roll in a “belly wrap” configuration (straps passing under the roll and back over the top). The shipper has loaded three paper rolls weighing approximately 4,500 lbs each, positioned side-by-side across the trailer width. Analyze whether this securement configuration meets 49 CFR Part 393 Subpart J requirements for paper rolls, and identify any deficiencies.

29. A driver with Tank Vehicle (N) endorsement is comparing two tank trailers for a liquid chemical transport assignment. Trailer A is a baffled tanker with internal bulkhead plates dividing the tank into compartments with holes allowing liquid flow. Trailer B is a smooth bore tanker with no internal structures. Both tanks have identical external dimensions and capacity. The route includes 150 miles of winding mountain roads. Analyze the surge characteristics and handling differences between these two tank configurations for this specific route.

30. A driver transporting gasoline in a 9,500-gallon tank trailer receives loading documentation from the shipper showing: product volume 8,550 gallons, tank capacity 9,500 gallons, loaded percentage 90%, outage (ullage) 950 gallons (10%). The ambient temperature at loading was 65°F, and the route destination has forecast temperatures of 95°F. Analyze whether this outage/ullage meets federal requirements and safety considerations for gasoline transport, and identify what precautions the driver must take.