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Virginia CDL practice

Selected knowledge practice, not a complete licensing course or practical training.

Virginia CDL General Knowledge 1

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Question 1 of 20
  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?
  13. 13. A driver estimates stopping space using only the distance traveled after the brake pedal is pressed. What important travel is missing?
  14. 14. On a cold morning near freezing, a dark road patch looks merely wet. What should a truck driver consider before reaching it?
  15. 15. A high-center-of-gravity truck approaches a curve with a posted advisory speed. Why might the driver need to enter more slowly than that value?
  16. 16. Nearby cars are exceeding the speed limit, and a truck driver feels pressured to match them. Which decision is appropriate?
  17. 17. A reduced-speed work zone continues for several miles. Traffic feels steady, but the truck's speed has gradually increased. What habit helps prevent this drift?
  18. 18. A car is following a truck too closely. What change can help the truck driver avoid having to brake abruptly?
  19. 19. A car has remained beside the truck for a long distance. Why should the truck driver seek a safe opportunity to regain open space beside the vehicle?
  20. 20. A van-bodied truck's suspension settles lower when it is heavily loaded. It cleared a low opening while loaded yesterday and is empty today. What should the driver conclude?
Review all 20 questions with answers
  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. ↗

  13. A driver estimates stopping space using only the distance traveled after the brake pedal is pressed. What important travel is missing?

    Correct answer: Travel while recognizing the hazard and reacting to it

    Total stopping distance includes perception and reaction travel as well as braking distance. Sound brakes do not eliminate the distance covered before brake application.

    Source: Virginia Commercial Driver's License Manual, Modernized Testing System, Version 07/20/2026; Section 2 Driving Safely, physical 32, printed 2-14; 2.6.1 Stopping Distance. ↗

  14. On a cold morning near freezing, a dark road patch looks merely wet. What should a truck driver consider before reaching it?

    Correct answer: A thin, transparent ice layer may be present

    Black ice can make pavement look wet rather than frozen. Nearby traction and the absence of visible snow do not establish that the patch is safe.

    Source: Virginia Commercial Driver's License Manual, Modernized Testing System, Version 07/20/2026; Section 2 Driving Safely, physical 33, printed 2-15; 2.6.2 Matching Speed to the Road Surface—Slippery Surfaces. ↗

  15. A high-center-of-gravity truck approaches a curve with a posted advisory speed. Why might the driver need to enter more slowly than that value?

    Correct answer: The truck's load and stability may require a lower safe speed

    Posted curve speeds may be too high for some large vehicles. Reduce speed before entry to suit the vehicle, load, and conditions rather than treating the sign as a stability guarantee.

    Source: Virginia Commercial Driver's License Manual, Modernized Testing System, Version 07/20/2026; Section 2 Driving Safely, physical 33, printed 2-15; 2.6.3 Speed and Curves. ↗

  16. Nearby cars are exceeding the speed limit, and a truck driver feels pressured to match them. Which decision is appropriate?

    Correct answer: Keep a speed that is both lawful and safe for the conditions

    Matching traffic flow is useful only when that speed is legal and safe. Other drivers' speeding does not justify exceeding a safe or lawful speed.

    Source: Virginia Commercial Driver's License Manual, Modernized Testing System, Version 07/20/2026; Section 2 Driving Safely, physical 33, printed 2-15; 2.6.5 Speed and Traffic Flow. ↗

  17. A reduced-speed work zone continues for several miles. Traffic feels steady, but the truck's speed has gradually increased. What habit helps prevent this drift?

    Correct answer: Check the speedometer regularly while monitoring the work zone

    Drivers can unintentionally creep back toward normal speed in long work zones. Periodic speedometer checks help maintain the appropriate reduced speed while attention remains on changing conditions.

    Source: Virginia Commercial Driver's License Manual, Modernized Testing System, Version 07/20/2026; Section 2 Driving Safely, physical 34, printed 2-16; 2.6.7 Roadway Work Zones. ↗

  18. A car is following a truck too closely. What change can help the truck driver avoid having to brake abruptly?

    Correct answer: Create more space ahead and make speed changes smoothly

    More space ahead gives the truck driver room to slow gradually. Speeding up or trying to startle a tailgater can make the situation more dangerous.

    Source: Virginia Commercial Driver's License Manual, Modernized Testing System, Version 07/20/2026; Section 2 Driving Safely, physical 35, printed 2-17; 2.7.2 Space Behind—Dealing with Tailgaters Safely. ↗

  19. A car has remained beside the truck for a long distance. Why should the truck driver seek a safe opportunity to regain open space beside the vehicle?

    Correct answer: Side-by-side travel reduces room for either vehicle to avoid a hazard

    Avoid unnecessary prolonged side-by-side travel. It leaves less room if either driver changes lanes or must avoid a hazard.

    Source: Virginia Commercial Driver's License Manual, Modernized Testing System, Version 07/20/2026; Section 2 Driving Safely, physical 35, printed 2-17; 2.7.3 Space to the Sides. ↗

  20. A van-bodied truck's suspension settles lower when it is heavily loaded. It cleared a low opening while loaded yesterday and is empty today. What should the driver conclude?

    Correct answer: Yesterday's passage does not establish today's overhead clearance

    Some vehicles ride higher after unloading. Know the truck's current height and the actual clearance; a previous loaded trip does not prove that an empty truck will fit.

    Source: Virginia Commercial Driver's License Manual, Modernized Testing System, Version 07/20/2026; Section 2 Driving Safely, physical 36, printed 2-18; 2.7.4 Space Overhead. ↗

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Home / Virginia / CDL

Virginia CDL practice

52 general-knowledge questions on vehicle checks, space management, hazard awareness and safe commercial driving. Start with a short set.

Use this alongside the CDL manual

This is a focused study selection, not complete CDL preparation. The current-linked Virginia manual is the Modernized Testing System edition dated July 20, 2026. Current Virginia DMV and federal guidance supplies licensing requirements. The subject question sets below cover air brakes, combinations, passenger vehicles, cargo, doubles/triples, tanks, school buses and hazardous materials separately. The practical-preparation supplement is marked separately and is not included in the written knowledge tests. Regulatory questions draw on the applicable current primary guidance, not only a handbook summary. Study the full chapters required for your vehicle and endorsements. Our questions are independent practice, not official exam questions or a substitute for required training.

CDL licensing supplement

20 additional questions on permits, ELDT, vehicle classes, restrictions and self-certification. This separate study group is not included in the general-knowledge tests.

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Practical Preparation

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