North Dakota Century Code Title 24. Highways, Bridges, and Ferries § 24-15-03. Minimum requirements

1. The temporary roadblock must be established at a point on the highway clearly visible at a distance of not less than three hundred feet [91.44 meters] in either direction.

2. At a point of the temporary roadblock, at least one red light must be placed at the point of the temporary roadblock which must display an intermittent or flashing beam of light, clearly visible to the oncoming traffic at a distance of not less than three hundred feet [91.44 meters] under normal atmospheric conditions. The intermittent or flashing beam of light may be provided by lighting which is part of the equipment of a class A authorized emergency vehicle.