|Type of Highway||Cars and Light Trucks||Heavy Trucks
(over one ton manufacturer's rated capacity)
|Interstate Within Urban Area
Billings, Great Falls and Missoula
The speed study is a common traffic investigation requested by the public and local governments. Although the initial request may come from a concerned citizen, Helena traffic staff typically contacts the appropriate local government in writing to request authorization to proceed with the speed study. It is department policy that all speed limit investigations must be conducted in cooperation with local officials. The request is placed on the list of speed study requests and processed in the order it was received unless a higher priority is assigned.
It usually takes 9-12 months to complete a speed study. This allows for data collection and comment from the public and local government prior to recommendations being presented to the Transportation Commission for action (MCA § 61-8-309).For more information, please contact Doug Bailey at 406.444.6220.