Speed Limit Laws: Montana

Rural Interstates

Cars (MPH) Trucks (MPH)
80 70

Urban Interstates

Cars (MPH) Trucks (MPH)
65 65

Other Limited Access Roads

Cars (MPH) Trucks (MPH)

Day: 70

Night: 65

Day: 70 (Light Trucks), 60 (Heavy Trucks)

Night: 65 (Light Trucks), 55 (Heavy Trucks)

State
Montana
Issue
Speeding and Aggressive Driving
Determinations
Rural Interstates: Cars (MPH)

80

Rural Interstates: Trucks (MPH)

70

Urban Interstates: Cars (MPH)

65

Urban Interstates: Trucks (MPH)

65

Other Limited Access Roads: Cars (MPH)

Day: 70 Night: 65

Other Limited Access Roads: Trucks (MPH)

Day: 70 (Light Trucks), 60 (Heavy Trucks) Night: 65 (Light Trucks), 55 (Heavy Trucks)