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Question 1 of 12
  1. 1. A truck's brake linings still have substantial thickness, but oil has soaked into the friction surfaces. What does that finding mean?
  2. 2. A driver notices one broken leaf in a truck's leaf-spring assembly. The remaining leaves appear intact. Which conclusion is sound?
  3. 3. An exhaust pipe is firmly attached but rubs against a fuel-system component when the truck vibrates. What should the driver recognize?
  4. 4. A reusable bottle has rolled out of its holder and is loose on the cab floor before departure. Why should it be secured?
  5. 5. A truck must start moving on a surface with limited traction, and the route is safe to use. Which use of the accelerator best reduces wheelspin?
  6. 6. A driver is assigned a manual-transmission truck with a different engine and transmission from the usual vehicle. How should the driver establish its shifting range?
  7. 7. A truck has a conventional driver-controlled retarder that slows its drive wheels. The road ahead is icy. What is the concern with leaving that retarder active?
  8. 8. A driver watches the road far ahead so intently that nearby traffic changes are being missed. What would improve the search pattern?
  9. 9. A car looks small in the truck's curved, convex mirror. What should the driver keep in mind when judging its position?
  10. 10. While traveling in traffic, a driver wants to monitor a car behind the truck. Which approach best preserves awareness ahead?
  11. 11. A truck is approaching a driveway where it will need to slow substantially. The truck blocks the following driver's view of that driveway. What helps the following driver respond?
  12. 12. A following driver gestures as if asking the truck driver whether it is safe to pass. What is the truck driver's safest response?
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  1. A truck's brake linings still have substantial thickness, but oil has soaked into the friction surfaces. What does that finding mean?

    Correct answer: The contamination is a brake defect even though the linings are thick

    Oil on brake friction surfaces is a defect. Adequate lining thickness does not cancel the need to address contamination before relying on those brakes.

    Source: Virginia Commercial Driver's License Manual, Modernized Testing System, Version 07/20/2026; Section 2 Driving Safely, physical 20, printed 2-2; 2.1.3 What to Look For—Bad Brake Drums or Shoes. ↗

  2. A driver notices one broken leaf in a truck's leaf-spring assembly. The remaining leaves appear intact. Which conclusion is sound?

    Correct answer: A broken leaf is a suspension defect that needs attention

    The manual identifies broken spring leaves as dangerous defects. A level appearance or intact neighboring leaves is not a reason to dismiss a broken leaf.

    Source: Virginia Commercial Driver's License Manual, Modernized Testing System, Version 07/20/2026; Section 2 Driving Safely, physical 20, printed 2-2; 2.1.3 What to Look For—Suspension System Defects. ↗

  3. An exhaust pipe is firmly attached but rubs against a fuel-system component when the truck vibrates. What should the driver recognize?

    Correct answer: The contact is an exhaust-system defect needing correction

    Exhaust-system parts must not rub against fuel-system parts, tires, or other moving parts. A secure mounting does not make harmful contact acceptable.

    Source: Virginia Commercial Driver's License Manual, Modernized Testing System, Version 07/20/2026; Section 2 Driving Safely, physical 21, printed 2-3; 2.1.3 What to Look For—Exhaust System Defects. ↗

  4. A reusable bottle has rolled out of its holder and is loose on the cab floor before departure. Why should it be secured?

    Correct answer: It could move into the controls or strike the driver

    Loose cab articles can interfere with vehicle controls or strike the driver during a stop or crash. Secure the bottle instead of relying on where it happens to rest.

    Source: Virginia Commercial Driver's License Manual, Modernized Testing System, Version 07/20/2026; Section 2 Driving Safely, physical 25, printed 2-7; 2.1.5 Seven-Step Inspection Method—Step 6: Check Signal Lights, Get In Vehicle. ↗

  5. A truck must start moving on a surface with limited traction, and the route is safe to use. Which use of the accelerator best reduces wheelspin?

    Correct answer: Build power gently and progressively

    Smooth, gradual acceleration helps the drive tires maintain traction. Abrupt power application can make them spin on a slippery surface.

    Source: Virginia Commercial Driver's License Manual, Modernized Testing System, Version 07/20/2026; Section 2 Driving Safely, physical 26, printed 2-8; 2.2.1 Accelerating. ↗

  6. A driver is assigned a manual-transmission truck with a different engine and transmission from the usual vehicle. How should the driver establish its shifting range?

    Correct answer: Learn that vehicle's operating range and manufacturer guidance

    Engine operating ranges and appropriate shifting methods vary. Learn the assigned vehicle rather than treating one truck's shift points as universal.

    Source: Virginia Commercial Driver's License Manual, Modernized Testing System, Version 07/20/2026; Section 2 Driving Safely, physical 27, printed 2-9; 2.3.1 Manual Transmissions—Basic Method for Shifting Up. ↗

  7. A truck has a conventional driver-controlled retarder that slows its drive wheels. The road ahead is icy. What is the concern with leaving that retarder active?

    Correct answer: It can make the drive wheels skid on the low-traction surface

    A conventional drive-wheel retarder can cause a skid when traction is poor. The manual calls for turning this type of retarder off on slippery roads; know the vehicle's controls and manufacturer instructions.

    Source: Virginia Commercial Driver's License Manual, Modernized Testing System, Version 07/20/2026; Section 2 Driving Safely, physical 28, printed 2-10; 2.3.4 Retarders. ↗

  8. A driver watches the road far ahead so intently that nearby traffic changes are being missed. What would improve the search pattern?

    Correct answer: Alternate attention between the distance and the area nearer the truck

    Looking well ahead provides planning time, but the manual also calls for shifting attention between near and far areas. Fixating on either misses important information.

    Source: Virginia Commercial Driver's License Manual, Modernized Testing System, Version 07/20/2026; Section 2 Driving Safely, physical 28, printed 2-10; 2.4.1 Seeing Ahead. ↗

  9. A car looks small in the truck's curved, convex mirror. What should the driver keep in mind when judging its position?

    Correct answer: The mirror can make the car seem farther away than it is

    Convex mirrors widen the view but make objects look smaller and farther away. Do not treat the apparent distance as an undistorted measurement.

    Source: Virginia Commercial Driver's License Manual, Modernized Testing System, Version 07/20/2026; Section 2 Driving Safely, physical 29, printed 2-11; 2.4.2 Seeing to the Sides and Rear—Use Mirrors Properly. ↗

  10. While traveling in traffic, a driver wants to monitor a car behind the truck. Which approach best preserves awareness ahead?

    Correct answer: Use brief mirror glances and promptly return attention to the road ahead

    Mirror checks are essential, but they should be brief while moving. Long looks away from the road ahead can allow a developing hazard to go unnoticed.

    Source: Virginia Commercial Driver's License Manual, Modernized Testing System, Version 07/20/2026; Section 2 Driving Safely, physical 29, printed 2-11; 2.4.2 Seeing to the Sides and Rear—Use Mirrors Properly. ↗

  11. A truck is approaching a driveway where it will need to slow substantially. The truck blocks the following driver's view of that driveway. What helps the following driver respond?

    Correct answer: Signal the planned turn early and reduce speed gradually

    Following drivers may not see the reason for a truck's slowdown. Early signaling and gradual slowing give them more warning and time to adjust.

    Source: Virginia Commercial Driver's License Manual, Modernized Testing System, Version 07/20/2026; Section 2 Driving Safely, physical 30, printed 2-12; 2.5.1 Signal Your Intentions—Slowing Down. ↗

  12. A following driver gestures as if asking the truck driver whether it is safe to pass. What is the truck driver's safest response?

    Correct answer: Avoid giving a signal that promises the pass is safe

    Do not direct another driver to pass. That driver must assess the complete passing situation; the truck driver should not give an assurance that can be misunderstood.

    Source: Virginia Commercial Driver's License Manual, Modernized Testing System, Version 07/20/2026; Section 2 Driving Safely, physical 30, printed 2-12; 2.5.1 Signal Your Intentions—Don't Direct Traffic. ↗

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My CDL mistakes

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