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You MUST pass this test to get your CDL and drive a commercial vehicle. The General Knowledge CDL test is taken from CDL manual sections 1 (general trucking knowledge), 2 (driving safely), and 3 (transporting cargo safely).
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To drive a commercial vehicle with air brakes, you must get the Air Brakes endorsement on your CDL. This exam is based on Air Brakes section 6 of the CDL manual, covering The Parts of an Air Brake System, Dual Air Brake, and Inspecting/Using Air Brakes.
You must pass the Combination Vehicles exam to pull any kind of trailer. Tests cover section 6 of the CDL manual, including Driving Combination Vehicles Safely, Coupling and Uncoupling, Inspections, and more.
To drive a bus, you must get a Passenger Vehicles endorsement on your CDL. Questions based on Section 4, covering Transporting Passengers Safely, Vehicle Inspection, Loading & Trip Start, After-trip procedures, and Prohibited Practices.
To legally transport Hazardous Materials as defined in Title 49, CFR, §383.5, you must get a Hazmat Endorsement. CDL Test questions are based on CDL manual section chapter covering Hazardous Materials.
To haul vehicles that transport liquids or gases, you need to get the Tanker Endorsement on your CDL. Test questions are based on section 8 of your CDL manual and cover inspecting and driving tank vehicles, plus safe driving rules.
More things can go wrong when pulling 2 or 3 trailers, so you must understand safety regulations in your CDL manual. Questions come from section 7 and include pulling, coupling/uncoupling, and inspecting double/triple trailers.
We’ve created questions designed to prepare you to pass the Pre-Trip Inspection part of the CDL skills test. Based on section 11 of your CDL manual, covering all vehicles, external inspection, and trailer inspections.
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