Speed zones - Reduction limitation
N.D. Cent. Code § 39-09-07.1
in effect39-09-07.1. Speed zones - Reduction limitation
1. Except under subsections 2 and 3, a street, road, or highway in the state highway
system or any other township, county, or state road or highway may not be posted in a
manner which reduces the maximum speed limit on the street, road, or highway by
more than twenty miles [32.19 kilometers] per hour between two signs posted in a
speed zone.
2. The maximum speed limit reductions between two fixed or variable signs in a variable
speed limit adjustment zone may exceed twenty miles [32.19 kilometers] per hour
when speed limits are lowered temporarily by the director due to unsafe conditions.
3. The maximum speed limit reduction between two signs posted in a highway
construction zone may not exceed thirty miles [48.28 kilometers] per hour.
Source: Open US Law by Vaquill AI (CC BY 4.0)URL: https://ndlegis.gov/cencode/t39c09.pdf#nameddest=39-09-07p1Fetched: 10/16/2026