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Phone: 406.444.9252

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See also: Montana OLI

Speed Limits

Speed limits are posted to protect the public by informing drivers of the authorized, allowable speed of motor vehicles upon a roadway. Common speed limits are typically statutory as stated in Montana Code Annotated 61-8-303. Speed limits signage is posted only after traffic and safety engineering study has been conducted and where applicable, approved by the Transportation Commission.

Traffic and Safety Engineering considers the length and width of roadway, roadway type and condition, location of access roads and intersections, existing traffic control, sight distance, crash history, and traffic speed studies.

:: 61-8-309. Establishment of special speed zones.
:: 61-8-310. When local authorities may and shall alter limits
:: Common Questions
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