New Jersey CDL — Air Brakes practice
Penalties & Licensing
The point system, license suspension, provisional-license rules, insurance requirements, and other licensing basics.
Questions reviewed against the official New Jersey driver handbook · July 7, 2026
3 questions · pass with 2 correct. You get instant feedback and an explanation after every answer.
Study questions with answers
3 sample Penalties & Licensing questions with the correct answer, a short explanation, and the official handbook reference. Read through them, then take the quiz above.
1. What brake-related defect is the most common problem found during roadside inspections?
Correct answer: Brakes that are out of adjustment
Out-of-adjustment brakes turn up more often than any other defect in roadside inspections, which is why checking slack adjusters is so important.
Source: New Jersey Commercial Driver License Manual, Section 5.3 - Inspecting Air Brake Systems
2. Truck tractors with air brakes are required to have antilock brakes (ABS) if built on or after which date?
Correct answer: March 1, 1997
Federal rules require ABS on air-braked truck tractors manufactured on or after March 1, 1997.
Source: New Jersey Commercial Driver License Manual, Section 5.1.16 - Antilock Braking Systems
3. Other air brake vehicles such as trucks, buses, trailers, and converter dollies must have ABS if built on or after which date?
Correct answer: March 1, 1998
For air-braked trucks, buses, trailers, and converter dollies (other than tractors), ABS is required on units built on or after March 1, 1998.
Source: New Jersey Commercial Driver License Manual, Section 5.1.16 - Antilock Braking Systems
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Every New Jersey question is written from the official New Jersey driver handbook and checked against its current edition. DMV Test Free is a free, independent study resource — not affiliated with any DMV or government agency. About DMV Test Free