Arizona CDL — General Knowledge practice
Arizona CDL — General Knowledge: Traffic Laws practice test
Speed limits, turning and signaling rules, headlight and seat-belt requirements, and the everyday laws every driver must follow.
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 Traffic Laws 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. While driving a commercial vehicle, what does the rule on hand-held phones permit?
Correct answer: Only hands-free use with at most a single-button touch
A CMV driver may not hold a phone to talk or press more than one button to dial; only a hands-free device positioned within reach is allowed.
Source: Arizona CDL Manual — Section 1: Introduction
2. You must notify your licensing agency within how many days of being convicted of a traffic offense in another jurisdiction?
Correct answer: 30 days
A conviction anywhere outside your home state must reach your motor vehicle licensing agency within thirty days, regardless of what you were driving.
Source: Arizona CDL Manual — Section 1: Introduction
3. Which of the following counts as a serious traffic violation for a CDL holder?
Correct answer: Excessive speeding — at least 15 mph over the posted limit
Serious violations include going 15 mph or more over the limit, reckless driving, erratic lane changes, and tailgating, among others.
Source: Arizona CDL Manual — Section 1: Introduction
4. What is the rule about text messaging while driving a commercial motor vehicle?
Correct answer: It is completely prohibited
Manually entering or reading text on a device is banned outright for CMV drivers, whether the messages are personal or work-related.
Source: Arizona CDL Manual — Section 1: Introduction
5. When does the rule allow a CMV driver to use a hand-held phone at all?
Correct answer: Only to reach law enforcement or emergency services in an emergency
The single exception to the hand-held ban lets you use the phone by hand only when it is necessary to contact law enforcement or other emergency services.
Source: Arizona CDL Manual — Section 2: Driving Safely
6. The first time a driver violates an out-of-service order, the disqualification runs at least how long?
Correct answer: 180 days
Ignoring an out-of-service order the first time costs the driver a minimum of 180 days; repeat violations carry multi-year losses.
Source: Arizona CDL Manual — Section 1: Introduction
7. After how many phone-use convictions does a driver face CDL disqualification, and what is the second-offense penalty?
Correct answer: Two or more convictions; 60 days for the second within three years
Two or more convictions trigger disqualification: a second offense inside three years costs 60 days, while reaching three or more raises the ban to 120 days.
Source: Arizona CDL Manual — Section 2: Driving Safely
8. In roadway work zones, what is identified as the leading cause of injury and death?
Correct answer: Speeding traffic
Excess speed is the number-one killer in work zones, so obey the posted limits and watch that your speed does not creep upward through long construction stretches.
Source: Arizona CDL Manual — Section 2: Driving Safely
9. A driver placed in 'prohibited' status in the federal Drug and Alcohol Clearinghouse faces what outcome?
Correct answer: Loss or denial of state commercial driving privileges until return-to-duty is complete
A 'prohibited' Clearinghouse status blocks safety-sensitive duties, including operating CMVs, and states will deny or remove the CDL until the return-to-duty process is finished.
Source: Arizona CDL Manual — Section 1: Introduction
10. What does the manual require regarding the driver's safety belt in a commercial vehicle?
Correct answer: Wear it properly at all times while operating the vehicle
A commercial driver must stay properly buckled the entire time the vehicle is being operated; the belt keeps you behind the wheel and in control during a crash.
Source: Arizona CDL Manual — Section 1: Introduction
11. If a CDL holder commits two serious traffic offenses inside a three-year span, the disqualification runs at least how long?
Correct answer: 60 days
A pair of serious violations inside three years brings a minimum 60-day loss; a third within that window raises it to 120 days.
Source: Arizona CDL Manual — Section 1: Introduction
12. Three or more serious traffic violations in a three-year span lead to a disqualification of at least how long?
Correct answer: 120 days
Once a driver reaches three serious violations within three years, the minimum disqualification is 120 days.
Source: Arizona CDL Manual — Section 1: Introduction
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