North Dakota CDL Practice Test 2025

North Dakota's agricultural and energy economy makes several endorsements particularly relevant. The Tank Vehicle (N) endorsement is important for oilfield liquid transport. The Doubles/Triples (T) endorsement is needed for pulling multiple trailers on I-94 or I-29. The HazMat (H) endorsement is required for many oilfield chemical and petroleum transport jobs. The Combination (A) endorsement covers most long-haul freight operations. Grain transport typically requires the standard Class A CDL with no special endorsement unless using a tanker configuration.

When North Dakota DOT closes I-94, I-29, or other highways during blizzards, the closure applies to all vehicles including commercial trucks. CDL drivers who attempt to drive through a road closure barrier commit a Class B misdemeanor and face potential CDL disqualification actions. Carriers should have established protocols for drivers to shelter at truck stops (located along I-94 and I-29) and wait for road conditions to improve. NDDOT typically reopens roads as soon as conditions allow and provides real-time updates through the 511 system.

Under NDCC § 39-12-04, counties in the Williston Basin (Williams, McKenzie, Mountrail, Dunn counties) may post reduced weight limits or restrict access on county roads damaged by oilfield truck traffic. These restrictions are legally enforceable and change seasonally — spring thaw periods often trigger the most restrictive limits as weakened road bases cannot support heavy loads. CDL drivers operating in oilfield areas must check county road postings for the specific routes they plan to use before every trip, not just once per season.

Grain transport in North Dakota typically requires a Class A CDL for combination vehicles (semi-truck and grain trailer) or a Class B CDL for single-unit grain trucks exceeding 26,000 lbs GVWR. During fall harvest, the state issues seasonal overweight permits that allow grain trucks to operate above standard federal weight limits on designated highway routes. CDL drivers with grain truck permits must carry the permit documentation in the vehicle and operate only on the authorized routes and within the permitted weight ranges.

CDL drivers on North Dakota's interstates during winter must comply with all NDDOT road condition orders, including speed restrictions and road closures. Federal FMCSA regulations require CDL drivers to be in control of their vehicle at all times, which means adjusting speed for weather and road conditions below posted limits. North Dakota CDL holders are encouraged to equip CMVs with appropriate winter tires or chains as required, carry emergency supplies for potential waits at closures, and pre-plan routes with alternate options when blizzards are forecast.

A Class A CDL allows you to operate any combination of vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 lbs or more, provided the towed unit exceeds 10,000 lbs — this includes tractor-trailers and double/triple trailer rigs. A Class B CDL covers single vehicles with a GVWR of 26,001 lbs or more, or any such vehicle towing a unit not exceeding 10,000 lbs — this includes straight trucks and large buses. A Class C CDL is required for vehicles designed to carry 16 or more passengers (including the driver) or for vehicles transporting hazardous materials that require placarding, when those vehicles do not qualify for Class A or B.

CDL fees vary by state and by the class and endorsements you obtain. Most states charge separate fees for the CDL knowledge test ($10–$30 per attempt), the CDL skills test ($50–$150), and the CDL license itself ($50–$100). Additional fees apply for each endorsement (HazMat, Tanker, Passenger, etc.). The HazMat endorsement also requires a TSA security threat assessment fee of approximately $86. Check your North Dakota DMV website for current fee schedules.

Federal regulations (49 CFR 383.133) require that CDL applicants be able to read and speak the English language sufficiently to understand highway traffic signs and signals and to respond to official inquiries. Many states offer CDL knowledge tests in Spanish and other languages for non-commercial knowledge questions, but the actual CDL test must be taken in a language that allows the driver to meet the English proficiency requirement. Check with the North Dakota DMV for available language options.

In most states, a CDL is valid for 4–8 years (commonly 4–5 years). To renew your North Dakota CDL, you typically need to visit a DMV office, pass a vision test, pay the renewal fee, and update your medical certification (DOT physical). If you hold a HazMat endorsement, your TSA background check must also be current. CDLs cannot generally be renewed online due to federal requirements for in-person verification of medical certification.

If you fail the CDL General Knowledge test in North Dakota, you are typically required to wait a specified period (commonly 1–7 days) before retaking it. Most states allow 2–3 attempts before requiring additional waiting periods or study requirements. There is usually a retest fee for each attempt. Focus on the areas you missed — most states provide a score sheet showing which topic areas you need to review.