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California CDL Permit Test - Knowledge Test Class A

Number of questions: 50
Passing score: 40
Directions: This license is required for driving any legal combination of vehicles, including vehicles under Class B and Class C. The GVWR of a trailer is not to exceed 10,000 pounds. To receive this license, applicants must pass a 50-question test. Each question has three answer choices. To pass, applicants must answer 40 questions correctly. Test questions come from the California Commercial Driver Handbook. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), Combination Vehicles, Pre-Trip Vehicle Inspection Test, Basic Vehicle Control Skills Test and On-Road Driving. Endorsemetns that may be used with a Class A CDL are: Hazardous materials, Tank, Passenger, Doubles/Triples, HazMat and Tank, Air Brakes and School bus.
You have made error so far
Passing grade —
10 or fewer errors
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1.
Rust around wheel nuts may mean:
It rained recently.
The nuts are loose.
The nuts are too tight.
2.
To apply for a CDL, an applicant must be at least:
15 years old.
18 years old.
21 years old.
3.
A ____ allows a driver to gradually apply spring brakes.
Modulating control valve
Trailer air supply control
Relay valve
4.
Drivers trapped behind a slow-moving vehicle often:
Follow the vehicle too closely.
Allow the vehicle plenty of space.
Are happy with the speed of travel.
5.
Cargo should have one tie-down for every ____ of cargo.
Five feet
10 feet
20 feet
6.
If you’re unfamiliar with the area in which you must back up, you should:
Get out of your vehicle and walk around the area to become more familiar with it.
Not use both side mirrors because it can be distracting.
Wait for someone else to back up in the area so you can see how they do it.
7.
Mirrors should be checked:
Before every lane change.
When changing lanes, but only when other vehicles are nearby.
When changing lanes, but only if it is dark outside.
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