North Dakota's primary keep-right rule is found in North Dakota Century Code §39-10-08.
On roadways of sufficient width, vehicles generally must be driven on the right half of the roadway unless a statutory exception applies.
A vehicle traveling at less than the normal speed of traffic at the time, place and under the conditions then existing must be driven in the right-hand lane available for traffic, or as close as practicable to the right-hand curb or edge of the roadway.
The slower-traffic rule does not apply when the driver is overtaking and passing another vehicle traveling in the same direction or when preparing for a left turn at an intersection or into a private road or driveway.
North Dakota also requires drivers on marked roadways to remain as nearly as practicable within a single lane and not move from that lane until the movement can be made safely.
North Dakota therefore follows the traditional slower-traffic keep-right model rather than a statewide rule making the left lane exclusively a passing lane on every multilane highway.
Exceptions
- Overtaking and passing another vehicle traveling in the same direction.
- Preparing for a lawful left turn at an intersection or into a private road or driveway.
- Avoiding an obstruction when moving left is necessary and safe.
- Traveling on certain three-lane roadways under applicable lane rules.
- Traveling on a roadway restricted to one-way traffic.
Penalties
A violation of North Dakota's keep-right rule may result in a traffic citation.
North Dakota's demerit schedule assigns two points for driving on the wrong side of the road under §39-10-08 and related provisions.
The exact statutory fee and total amount due may depend on the specific violation and applicable court or administrative assessments. Drivers should verify the amount shown on the citation.
Official Source
North Dakota Century Code §39-10-08 - Drive on Right Side of Roadway; Exceptions
Last verified: October 11, 2026