Rhode Island CDL — General Knowledge practice
Rhode Island CDL — General Knowledge: Signals & Pavement Markings practice test
How to read traffic signals, lane lines, and pavement markings — including yellow and white lines, arrows, and flashing lights.
Content reviewed against official driver handbooks · August 12, 2026
13 questions · pass with 10 correct. You get instant feedback and an explanation after every answer.
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12 sample Signals & Pavement Markings questions with the correct answer, a short explanation, and the official handbook reference. Read through them, then take the quiz above.
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1. You start the engine during a pre-trip inspection. Which warning lights should go out right away?
Correct answer: Oil, coolant, charging circuit and antilock brake lights
Once the engine is running, the oil, coolant, charging circuit warning and ABS lights should switch off promptly. One that stays on points to a problem.
Source: Rhode Island CDL Manual — Section 2: Driving Safely (Seven-step Inspection Method)
2. What downside of the horn does the manual point out?
Correct answer: Sounding it when it isn't needed can startle people and create danger
The horn can tell others you are there and help prevent a crash, but used unnecessarily it can startle other road users and be dangerous.
Source: Rhode Island CDL Manual — Section 2: Driving Safely (Communicating)
3. On the road test's stop/start maneuver, which signals do you use when told to pull back into traffic?
Correct answer: Turn off the four-way flashers and turn on the left turn signal
When told to resume, check traffic and mirrors, shut off the four-way flashers, and switch on the left signal. Cancel it once you are back in the traffic flow.
Source: Rhode Island CDL Manual — Section 13: On-road Driving (Stop/Start)
4. Which reference lists hazardous chemicals along with the identification numbers assigned to them?
Correct answer: The U.S. DOT Emergency Response Guidebook
The US DOT Emergency Response Guidebook (ERG) matches chemicals with their identification numbers. Note that a single number can apply to more than one chemical.
Source: Rhode Island CDL Manual — Section 2: Driving Safely (Hazardous Materials Rules for All Commercial Drivers)
5. As a school bus applicant approaches the student stop on the road test, which lights are switched on?
Correct answer: The amber warning lights and the right turn signal
Approaching the stop, you slow down, turn on the amber warning lights and right turn signal, and move as far right as you can. The red lights and stop arm come on only after the bus has stopped.
Source: Rhode Island CDL Manual — Section 13: On-road Driving (Student Discharge)
6. During the walk-around, what colors are acceptable for a front turn signal that faces forward?
Correct answer: Amber or white
Forward-facing turn signals should be amber or white. Rear turn signals may be red, yellow or amber.
Source: Rhode Island CDL Manual — Section 2: Driving Safely (Seven-step Inspection Method)
7. On shipping papers, what letters come before a hazardous material's four-digit identification number?
Correct answer: UN or NA
Identification numbers are four-digit codes first responders use to identify hazardous materials, and each one carries a 'UN' or 'NA' prefix.
Source: Rhode Island CDL Manual — Section 2: Driving Safely (Hazardous Materials Rules for All Commercial Drivers)
8. How do you tell the examiner you have finished a basic control skills exercise?
Correct answer: Set the parking brake, shift to neutral or park, and sound the horn
At the end of each exercise, secure the vehicle with the parking brake, put it in neutral or park, and sound the horn so the examiner knows you are done.
Source: Rhode Island CDL Manual — Section 12: Basic Control Skills Test
9. Why should you brake early and slow gradually before a tight turn in a large vehicle?
Correct answer: Most car drivers don't realize how slowly a large vehicle must go to make a tight turn
Drivers behind you often underestimate how much a big rig has to slow for a tight turn. Braking early and easing off speed gives them warning.
Source: Rhode Island CDL Manual — Section 2: Driving Safely (Communicating)
10. According to the vehicle inspection test guidance, which vehicles are required to carry reflective tape?
Correct answer: Trailers, though some jurisdictions also require it on school buses
Reflective tape on a trailer's sides and rear helps others see it. The manual says only trailers require it, with some jurisdictions also requiring it on school buses.
Source: Rhode Island CDL Manual — Section 11: Vehicle Inspection Test (Trailers Only)
11. How much light can dirty headlights give compared with clean ones?
Correct answer: Only about half
Dirty headlights may produce only half the light they should, which cuts how well you see and how well others see you.
Source: Rhode Island CDL Manual — Section 2: Driving Safely (Driving at Night)
12. On some older ABS systems, how long may the malfunction lamp stay lit after start-up?
Correct answer: Until the vehicle is moving faster than about 5 mph
Newer vehicles light the lamp briefly for a bulb check. On older systems it may stay on until you pass about five mph. A lamp that stays on after that, or comes on while driving, means ABS control may be lost.
Source: Rhode Island CDL Manual — Section 2: Driving Safely (Antilock Braking Systems)
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Every Rhode Island question is written from the official Rhode Island 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