1. A CDL driver needs to back a tractor-semitrailer toward the passenger side (right side) into a loading dock. What additional precautions should the driver take compared to backing toward the driver’s side?

2. During the CDL skills test alley dock maneuver, you have used two pull-ups to correct your trailer’s angle. The examiner’s scoring sheet shows one free pull-up is allowed before deductions begin. You notice the trailer is still slightly misaligned with the dock. Analyze your options and determine the BEST decision.

3. A truck driver started their day at 5:00 AM with a full 10-hour off-duty period completed beforehand. They drove from 5:00 AM to 11:00 AM (6 hours), then loaded cargo from 11:00 AM to 12:00 PM (1 hour on-duty not driving), then drove from 12:00 PM to 5:00 PM (5 hours) without any breaks. At 5:00 PM, how many hours of driving time remain available under the 11-hour driving limit?

4. During a pre-trip inspection, a driver observes the following conditions on a Class B bus: (1) The windshield has a 4-inch crack running horizontally across the driver’s normal viewing area, (2) The left side mirror is cracked but still provides a usable reflection, (3) The right side mirror is clean and properly adjusted, (4) The windshield is covered with dirt and grime that reduces visibility. Which analysis correctly identifies which conditions must be corrected before driving?

5. A driver needs to back a 53-foot trailer into a loading dock in a busy lot. There is limited space and other vehicles are waiting. What is the safest approach to this backing maneuver?

6. When a commercial motor vehicle is placed out of service during a roadside inspection, what action must the driver take?

7. What is the primary reason that CMVs require significantly longer stopping distances compared to passenger vehicles?

8. A driver notices the air pressure gauge reading has dropped from 125 PSI to 35 PSI while driving, and the vehicle has suddenly slowed as the spring brakes have partially applied automatically. What is the correct immediate action?

9. Which of the following is the preferred side for backing a tractor-semitrailer when a choice is available?

10. A CDL driver has been on duty for 10 hours and is experiencing signs of fatigue: heavy eyelids, frequent yawning, and difficulty maintaining lane position. The driver has 2 more hours of planned driving to reach the delivery destination. What action should the driver take?

11. What is the difference between controlled braking and stab braking techniques when stopping a CMV on a slippery surface?

12. A driver operating a combination vehicle notices the ABS warning light on the dash illuminates and stays on after starting the vehicle. The driver checks the system and finds no obvious problems. During a hard braking test in a safe area, the brakes seem to function normally. What should the driver conclude, and what action is required?

13. A driver is crossing railroad tracks when the vehicle’s transmission fails, leaving the truck stalled on the tracks. The driver has attempted restarts twice without success. The crossing has no active warning signals, but the driver hears a train horn in the distance from an unknown direction. The vehicle is a hazmat tanker carrying placarded Class 3 flammable liquids. Which analysis correctly identifies the priority sequence?

14. A driver operating a loaded tanker vehicle on a two-lane rural highway at 50 mph encounters a sudden skid on a curve—the rear of the trailer begins swinging toward the right (trailer jackknife developing). The driver sees an oncoming passenger vehicle approaching the curve from the opposite direction approximately 200 feet ahead. Multiple factors must be analyzed: skid recovery, communication with the oncoming driver, and curve handling. Which combined response is correct?

15. A combination vehicle has the following actual axle weights measured at a weigh station: steer axle 11,500 lbs, drive axle (single) 18,500 lbs, trailer axle 1 (in tandem) 17,500 lbs, trailer axle 2 (in tandem) 16,500 lbs. Calculate the gross weight and determine if this vehicle is in compliance with federal interstate weight limits.

16. What is off-tracking in a commercial motor vehicle, and how does it affect turning?

17. A CDL driver has been operating for 10 hours during a night trip through mountainous terrain. The driver encounters a heavy snowstorm that reduces visibility to approximately 300 feet. The temperature is 25°F, and ice is forming on the windshield. The driver’s 14-hour on-duty window expires in 2 hours. The destination is 80 miles away. Which analysis best evaluates the situation and determines the correct action?

18. During a pre-trip walk-around inspection of a Class A combination vehicle, the driver examines the frame and cross members. Which frame condition would constitute an out-of-service defect requiring repair before operation?

19. During the engine compartment portion of a Class A pre-trip inspection, what is the maximum acceptable belt deflection when pressed at the midpoint between pulleys?

20. A driver is descending a steep, wet grade with a loaded trailer. The driver notices the trailer beginning to swing out to the right while applying light braking. Traffic ahead is slowing down. Analyze the situation and determine the best immediate action.

21. During a pre-trip inspection, a driver performs a static leak test on a single vehicle. After building pressure to 120 PSI, turning off the engine, and releasing the parking brake, the pressure drops from 100 PSI to 96 PSI in one minute. What should the driver conclude?

22. A 19-year-old driver with a valid Class B CDL and clean driving record wants to transport cargo interstate from Texas to Oklahoma. The driver has passed all required tests and has a current DOT Medical Examiner’s Certificate. However, the motor carrier tells the driver they cannot be hired for interstate commerce. Which federal regulation most likely explains this hiring decision?

23. According to federal regulations, what is the minimum number of tiedowns required for an article of cargo that is longer than 5 feet?

24. You are driving a 50-foot straight truck at 55 MPH on a dry highway. What is your minimum required following distance in seconds?

25. A driver discovers multiple defects during pre-trip inspection: low coolant level, one non-functional clearance light, and slack adjuster push rod travel of 0.9 inches. The driver prepares to document these findings on the DVIR. Which defect requires immediate repair before the vehicle can be dispatched, and which can be documented for later repair?

26. A driver approaches a passive railroad crossing (crossbuck sign only) on a rural road while descending a slight grade. The vehicle is a loaded 60-foot combination vehicle traveling at 40 mph. The crossing is visible from approximately 400 feet away. What is the correct crossing procedure?

27. 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.

28. A driver is navigating a combination vehicle through a roundabout. The entrance is 14 feet wide, and the roundabout has a central island. The tractor’s front wheels enter at the right side of the entrance lane. Where will the trailer’s rear wheels most likely track?

29. A commercial driver is traveling on a highway in moderate fog with visibility of approximately 500 feet. Traffic is moving at various speeds. The driver observes a vehicle ahead that appears to be braking intermittently without obvious reason. Analyzing the situation from a defensive driving perspective, which interpretation and response is most appropriate?

30. A driver is preparing to descend a steep mountain grade with a loaded tractor-semitrailer. Another driver suggests using the trailer hand valve (trolley valve) continuously during the descent to help control speed. What is the correct response to this suggestion?

31. What is the required stopping distance from railroad tracks for vehicles transporting hazardous materials or carrying passengers?

32. A driver begins the pre-trip inspection by checking the trailer lights before inspecting the engine compartment. Why is this approach problematic?

33. You are driving a tractor-semitrailer and need to make a right turn at an intersection in an urban area. There are vehicles in the right lane beside you and pedestrians near the corner. What is the correct procedure for executing this right turn safely?

34. During a pre-trip inspection, a driver checks the fifth wheel and finds that the mounting bolts appear tight but three of the eight bolts have visible rust streaks emanating from the bolt heads. The fifth wheel plate shows no cracks. What does this finding indicate and what action is required?

35. What is the primary function of the trailer breakaway valve in a combination vehicle’s air brake system?

36. A driver has been convicted of driving under the influence of alcohol while operating a personal vehicle. What is the consequence for their CDL privileges under 49 CFR 383.51?

37. A CDL skills test applicant is performing the parallel parking exercise and realizes the trailer is positioned incorrectly midway through the backing maneuver. The applicant has already used one free pull-up. The applicant must decide whether to continue backing from the current position (which will likely result in boundary encroachments) or make a second pull-up to reposition. Which analysis correctly evaluates this decision in terms of scoring optimization?

38. A driver is testing the air brake system during a pre-trip inspection on a tractor-semitrailer. With the engine running, the driver pumps the brake pedal to reduce air pressure and observe when the low-pressure warning activates. The warning light and buzzer activate at 55 PSI. The driver notes that FMCSA regulations state the warning must activate at “approximately 60 PSI.” Which analysis correctly evaluates whether this vehicle meets the standard?

39. A CDL driver approaches a highway entrance ramp curve at 40 mph in a 65-foot combination vehicle. The ramp advisory speed is 25 mph. The driver maintains 40 mph through the curve, and the trailer begins to drift toward the outside edge of the curve. The driver applies brakes in the curve, causing the trailer to swing outward further. Which analysis correctly identifies what went wrong and what should have been done?

40. When a railroad crossing has multiple tracks, what additional precaution must a driver take before proceeding across the crossing?

41. Under the 60-hour/7-day limit, a property-carrying driver who does not operate every day of the week may not drive after accumulating how many on-duty hours in any 7 consecutive days?

42. You are driving a tractor-semitrailer on a rural highway at night. An oncoming vehicle is approaching with its high beams illuminated, creating significant glare that temporarily impairs your vision. What is the correct response to handle this situation safely?

43. 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?

44. A driver is completing the exterior walk-around portion of a pre-trip inspection on a Class A tractor-semitrailer. During the lights and reflectors check, the driver observes that all headlights, taillights, brake lights, turn signals, and clearance lights are operational. However, the driver notices that two reflectors on the rear of the trailer are cracked and no longer reflective — they appear faded and dull. What determination should the driver make about this condition?

45. Which type of cargo loading situation creates the HIGHEST rollover risk for a combination vehicle?

46. While driving a tanker carrying liquid cargo, you approach a curve posted at 35 mph. The road is wet from recent rain. Your current speed is 40 mph. You begin to feel the rear of the trailer drifting outward (trailer skid). Analyzing the situation, what has occurred and what is the correct response?

47. When coupling a tractor-semitrailer, what should the driver inspect on the fifth wheel BEFORE backing under the trailer?

48. A driver is operating a school bus and approaches a railroad crossing with two sets of tracks. The driver has stopped at the proper distance and verified the first track is clear with no train approaching from either direction. The driver sees traffic backed up on the road beyond the crossing. What should the driver do?

49. A driver completes a day’s driving at 4:00 PM and parks the truck at a truck stop for a 10-hour rest period. During the rest period at 8:00 PM, the driver notices the left rear trailer tire appears low on air pressure. What is the correct procedure for handling this observation?

50. A driver has coupled a tractor to a trailer and performed the tug test. The tractor pulled forward successfully against trailer brakes, confirming the fifth wheel is locked. What should the driver do NEXT in the coupling sequence?