09-25-1991 Council Agenda - Laserfiche WebLink

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in section 169.01 based on their own engineering and traffic investigations. Alleyway speed limits established at other than ten miles per hour shall be effective when proper signs are posted. Subd. 5d. Speed zoning in work zones. The commissioner, on trunk highways and temporary trunk highways, and local authorities, on streets and highways under their jurisdiction, may authorize the use of reduced maximum speed limits in highway work zones. The commissioner or Local authority is not required to conduct an engineering and traffic investigation before authorizing a reduced speed limit in a highway work zone. The minimum highway work zone speed limit is 20 miles per hour. The work zone speed limit must not reduce the established speed limit on the affected street or highway by more than 15 miles per hour, except that the highway work zone speed limit shall not exceed 40 miles per hour. Highway work zone speed limits are effective on erection of appropriate regulatory speed limit signs designating the beginning and end of the affected work zone. The signs must be removed or covered when they are not required. A speed greater than the posted highway work zone speed limit is unlawful. For purposes of this subdivision, "highway work zone" means a segment of highway or street where a road authority or its agent is constructing, reconstructing, or maintaining the physical structure of the roadway, its shoulders, or features adjacent to the roadway, including underground and overhead utilities and highway appurtenances. Subd. 6. Repealed, Ex1971 c 27 s 49 Subd. 7. Burden of proof. The provisions of this chapter declaring speed limitation shall not be construed to relieve the plaintiff in any civil action from the burden of proving negligence on the part of the defendant as the proximate cause of an accident. Subd. 8. Minimum speeds. On determining upon the basis of an engineering and traffic investigation that a speed at least as great as, or in excess of, a specified and determined minimum is necessary to the reasonable and safe use of any trunk highway or portion thereof, the commissioner may erect appropriate signs specifying the minimum speed on such highway or portion thereof. The minimum speed shall be effective when such signs are erected. Any speeds Less than the posted minimum speeds shall be prima facie evidence that the speed is not reasonable or prudent and that it is unlawful. Subd. 9. Standards of evidence. In any prosecution in which the rate of speed of a motor vehicle is relevant, evidence of the speed of a motor vehicle as indicated on the speedometer thereof shall be admissible on a showing that a vehicle is regularly used in traffic law enforcement and that the speedometer thereon is regularly and routinely tested for 242 Page 71,