Free, full Rhode Island CDL general knowledge test practice right here in your browser — real exam format (50 questions, 80% to pass), diagnostic and adaptive modes, spaced-repetition review, and a readiness dashboard. No signup, no paywall — your progress is saved automatically on this device.
CDL safety scenario 46: What is the purpose of hours-of-service rules?
A. To reduce fatigue-related crashes — To reduce fatigue-related crashes. Commercial drivers are expected to manage this situation before it becomes a crash risk. The CDL manual emphasizes controlling the vehicle, inspecting safety-critical systems, and correcting hazards promptly.
What does 'segregation' mean in the context of loading hazardous materials?
B. Keeping incompatible hazardous materials apart from each other to prevent dangerous reactions if a leak or spill occurs — Segregation requirements prevent incompatible materials from being loaded together. For example, oxidizers and flammables must be kept separated, as they can create dangerous reactions if containers are damaged.
If you must make an emergency stop with air brakes, you should:
B. Use controlled braking or stab braking technique — Use controlled braking (apply firmly without locking) or stab braking (full brake, release when wheels lock, reapply). ABS helps prevent lock-up.
What is the FMCSA's definition of a 'commercial motor vehicle' (CMV) for CDL purposes?
B. A vehicle with a GVWR of 10,001 lbs or more, OR designed to carry 16+ passengers, OR transporting placardable hazardous materials — A CMV (for CDL licensing purposes) includes: vehicles with a GVWR or GCWR of 26,001+ lbs (CDL-A/B), vehicles designed to carry 16+ passengers including driver (CDL-B/C), or vehicles transporting placardable HazMat (CDL-C).
If your accelerator sticks, what should you do?
B. Keep both hands on the wheel, shift to neutral, turn on hazard lights, safely pull off the road and stop, then turn off the engine — With a stuck accelerator: keep steering, shift to neutral (this disconnects engine power from the drive wheels), turn on hazards, safely pull off the road, and shut off the engine. Do not panic or abandon the wheel.
During the applied leakage test, air loss for a combination vehicle should not exceed:
D. 4 PSI per minute — Combination vehicles can leak up to 4 PSI per minute with service brakes applied; single vehicles up to 3 PSI per minute.
The most important reason to do a vehicle inspection is:
D. Safety for yourself and other road users — Inspections find problems that could cause a breakdown or crash, protecting the driver and everyone sharing the road.
What class CDL is required to operate a combination vehicle with a GCWR over 26,000 lbs when the towed unit weighs more than 10,000 lbs?
B. Class A — A Class A CDL is required for combination vehicles with a GCWR of 26,001+ pounds when the towed unit has a GVWR of 10,001+ pounds.
What is a 'walk-around inspection' and when is it required?
B. A systematic exterior inspection of the entire vehicle performed before each trip, checking all major components — A walk-around pre-trip inspection is a systematic exterior examination of the vehicle before each trip. It is required by 49 CFR 392.7 and must be completed before driving to ensure the vehicle is safe to operate.
Brake fade on a long downgrade is caused by:
A. Brakes overheating from continuous use and losing effectiveness — Continuous braking overheats the drums and shoes, reducing friction, so use a low gear and engine braking to control speed on grades.
The Rhode Island CDL general knowledge test has 50 questions, and you need 80% to pass — at least 40 correct answers. The practice tests on this page use the same format. The 80% passing score is a federal FMCSA standard used by every state.
80%. You can miss at most 10 of the 50 questions. The readiness dashboard on this page tracks whether you're consistently scoring above that bar.
Yes. Every practice test on this page and everything in the DMVPrep iPhone app is free — no ads, no paywall, no account.
Federal motor carrier safety regulations (FMCSA) — the same rules every state's CDL exam is drawn from. Every question in the DMVPrep app cites the regulation or handbook section it comes from.
Yes — the DMVPrep app includes all 3,745+ questions in Spanish, and the whole app works in Spanish.