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Virginia Air Brakes Test

Over 70% of Virginia's CDL skills tests involve air brakes — don't skip this practice.

118
Questions
80%
To Pass
30
Minutes

Select Test Mode

DMV Simulator

Timed test with no hints. Simulates the real DMV exam experience.

  • 30 minute time limit
  • No hints or explanations

Learning Mode

Study mode with hints and explanations. Take your time to learn.

  • No time limit
  • Explanations available

About the Virginia Air Brakes Test

Virginia's highways are no joke. You'll face steep grades on I-81 through the Shenandoah Valley and heavy traffic on I-95 near Fredericksburg. Your air brakes must work perfectly in both situations. We've built this practice test around Virginia's actual inspection criteria. Each question reflects what the DMV examiner expects. Don't memorise answers — understand the system.

Air brakes are common on Virginia's logging trucks and gravel haulers. The state's seasonal weather — from icy Roanoke winters to humid Tidewater summers — puts extra strain on brake components. That's why Virginia requires a separate knowledge test for your air brake endorsement. You'll need to know more than basic theory.

This test covers adjustment, emergency procedures, and pre-trip inspection points. Virginia examiners often ask about spring brakes and supply pressure gauges. Practice until you can answer without guessing. Your safety on Virginia roads depends on it.

What This Test Covers

  • Foundation brakes – steep grades near Roanoke require reliable stopping power.
  • Air compressor & governor – Virginia's long downhills test your compressor's recovery time.
  • Brake chambers & slack adjusters – winter salt in Northern Virginia accelerates corrosion, so adjusters must be checked.
  • Reservoirs & one-way check valves – losing air on I-95 could strand you in traffic; know the system.
  • Spring brakes (parking brakes) – required for most CDL vehicles in Virginia; know how to release them safely.
  • Pre-trip inspection – Virginia DMV examiners watch you check brake lines, pushrods, and audible air leaks.

Study Tips

Visit the Virginia DMV website to download the official CDL manual. Focus on Chapter 5 for air brakes. You'll also need to pass a pre-trip inspection. Practice explaining each component out loud. That's how you'll remember it during the test.

Take this practice test multiple times. Virginia's test has 25 questions; you need 20 correct. Many drivers fail because they rush. Slow down and read each question twice. If you're unsure about a term, look it up in the manual. Our test uses real Virginia DMV wording, so you won't be surprised.

Virginia DMV Information

You can test at any Virginia DMV customer service center that offers CDL skills tests. Appointments are required. Book online at DMVNow (dmvnow.com). The fee for the air brake endorsement is $8 on top of your CDL license fee. Bring your learner's permit and a valid medical certificate.

Virginia also offers testing at third-party locations like community colleges and trucking schools. Check the DMV website for approved sites. The knowledge test is computer-based and available in English and Spanish. You'll get your results immediately.

Frequently Asked Questions

Yes, if you operate a vehicle with air brakes. The endorsement is required for any air-braked vehicle over 26,000 lbs. Even if your Class B vehicle has hydraulic brakes, you don't need it. But most commercial trucks in Virginia use air.

The Virginia DMV air brake test has 25 questions. You need to get 20 right to pass — that's 80%. The test covers the same topics as the manual, so study chapter 5 carefully.

No, Virginia requires you to take the air brake knowledge test in person at a DMV customer service center. Third-party testers like driving schools may also offer it. You cannot take it from home.

You can retake it the same day if time allows. But you'll need to pay the $8 fee again. Virginia DMV lets you retest up to three times before requiring a new application. Use our practice test to avoid that.

Absolutely. The Virginia skills test requires a full pre-trip inspection. You must check air brake components like slack adjusters, brake chambers, air lines, and the low-air warning device. Missing these can fail you on the spot.

Related Resources

Download Virginia CDL Handbook Virginia DMV Website

Other Virginia CDL Practice Tests

General Knowledge
Combination Vehicles
Hazmat
Tanker
Passenger
School Bus
Doubles & Triples
Pre-Trip Inspection

Test Details

  • State: Virginia
  • Test: Air Brakes Test
  • Questions: 118
  • Passing Score: 80%
  • Time Limit: 30 minutes
  • Cost: Free

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Quick Topics

  • Spring brakes & emergency stopping
  • Air pressure gauges & warning devices
  • Pre-trip inspection basics