ND CDL General Knowledge study guide
ND CDL General Knowledge · Work through your exam, one topic at a time.
The North Dakota Commercial Driver License (CDL) General Knowledge Test is the written knowledge exam that NDDOT administers as part of the CDL process. It is intended for drivers who operate or plan to operate commercial motor vehicles - tractor-trailers, straight trucks, tank vehicles, buses, and other heavy combinations - on North Dakota roads and across state lines. NDDOT publishes a Commercial Driver License Manual and maintains dedicated CDL pages covering how to apply, how to renew, third-party testing, hazardous material requirements, load restrictions, bridge clearances, and the 129,000-pound large truck network. Those pages, together with the manual, are the authoritative study sources. Topics on this exam: General Knowledge (CDL Manual core section), Air Brakes, Combination Vehicles, and Hazardous Materials. The ND CDL General Knowledge study guide has 4 sections and about 1,314 words.
01General Knowledge: Safe Operation and Inspection Basics
This domain tests baseline safe operation and inspection for every ND CDL vehicle. Expect questions on pre-trip inspection, basic control, shifting, backing, speed and space management, hazard recognition, emergency maneuvers, railroad crossings, and cargo securement basics.
343 words, about 2 min02Air Brakes: System Checks and Safe Use
Air brakes use compressed air to apply the service brakes and spring pressure to apply the parking/emergency brakes. A dual system has two separate circuits so a leak in one does not leave you without brakes.
343 words, about 2 min03Combination Vehicles: Stability, Coupling, and Inspection
Combination vehicles add rollover risk, off-tracking, and rearward amplification. A tractor-trailer does not follow the same path as a car: the trailer wheels cut inside the turn, and the rear of a long combination can swing wide.
316 words, about 2 min04Hazardous Materials: Placards, Papers, and Parking
A hazardous materials endorsement is required to drive placarded loads. The knowledge test covers shipping papers, placards, parking, driving rules, and emergency response.
312 words, about 2 min