Utah CDL — General Knowledge practice
Utah 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
14 questions · pass with 11 correct. You get instant feedback and an explanation after every answer.
Choose your level
Up to 20 questions on this topic, with feedback after every answer.
Study questions with answers
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.
Show all 12 questions with answers
1. Which of these counts as a serious traffic violation for a commercial driver?
Correct answer: Following another vehicle too closely
Serious violations include excessive speeding of 15 mph or more over the limit, reckless driving, improper lane changes, and following too closely.
Source: Utah CDL Manual — Section 1: Introduction (Serious Traffic Violations)
2. What is the minimum disqualification for two serious traffic violations in a CMV within three years?
Correct answer: At least 60 days
Two serious traffic violations in a commercial vehicle within a three-year period cost the CDL for at least 60 days.
Source: Utah CDL Manual — Section 1: Introduction (Serious Traffic Violations)
3. While driving a CMV, how may a commercial driver legally handle a mobile phone?
Correct answer: Only hands-free and located close to the driver
You may only use a hands-free phone kept close by; holding the phone or dialing by pressing more than a single button is prohibited.
Source: Utah CDL Manual — Section 2: Driving Safely (Cell/Mobile Phones)
4. May a driver whose personal license is suspended get a hardship license to keep driving a CMV?
Correct answer: No, a hardship license is not allowed
No hardship license is available; if your personal-vehicle privilege is revoked, canceled, or suspended, you cannot obtain a hardship license to operate a commercial vehicle.
Source: Utah CDL Manual — Section 1: Introduction (Traffic Violations in Personal Vehicle)
5. For a driver who racks up three or more serious violations inside three years, how long is the disqualification?
Correct answer: At least 120 days
Three or more serious violations within three years result in loss of the CDL for at least 120 days.
Source: Utah CDL Manual — Section 1: Introduction (Serious Traffic Violations)
6. After how many convictions for hand-held phone use while driving a CMV is a CDL disqualified?
Correct answer: After two or more convictions
The CDL is disqualified after two or more convictions of a state hand-held phone law while operating a CMV, with 60 days for the second and 120 for three or more.
Source: Utah CDL Manual — Section 2: Driving Safely (Cell/Mobile Phones)
7. Within how many days must you notify your licensing agency of a traffic conviction in another jurisdiction?
Correct answer: Within 30 days
A conviction for any moving violation in another jurisdiction must be reported to your licensing agency inside 30 days, parking tickets excepted.
Source: Utah CDL Manual — Section 1: Introduction (Other CDL Rules)
8. How fast over the posted limit qualifies as excessive speeding among serious violations?
Correct answer: 15 mph or more over
The manual defines excessive speeding as at least 15 mph past the posted limit, one listed serious violation.
Source: Utah CDL Manual — Section 1: Introduction (Serious Traffic Violations)
9. Where must hazardous-materials shipping papers be kept while you are driving?
Correct answer: In a door pouch or in clear view within reach
On the road the documents belong in a door pouch or plainly visible within reach, and they should rest on the seat when you step out.
Source: Utah CDL Manual — Section 2: Driving Safely (Communicate the Risk)
10. In which setting does speeding rank as the leading cause of injuries and fatalities?
Correct answer: Roadway work zones
In roadway work zones, speeding traffic is the top cause of injury and death, so posted work-zone limits must always be obeyed.
Source: Utah CDL Manual — Section 2: Driving Safely (Roadway Work Zones)
11. What is the minimum disqualification for a first railroad-highway grade crossing violation?
Correct answer: At least 60 days
A first grade-crossing violation costs the CDL for at least 60 days, rising to 120 days for a second and one year for a third within three years.
Source: Utah CDL Manual — Section 1: Introduction (Grade Crossing Violations)
12. A driver's first breach of an out-of-service order brings what minimum disqualification?
Correct answer: At least 90 days
A first out-of-service order violation costs the CDL for at least 90 days.
Source: Utah CDL Manual — Section 1: Introduction (Out-of-Service Orders)
More CDL — General Knowledge topics
Practice Traffic Laws in another state
Every Utah question is written from the official Utah 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