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SB 1408

SB 1408 - Currently, the maximum speed limit on rural interstates and freeways of this state is seventy miles per hour. This act increases the maximum speed limit on such roads to seventy-five miles per hour. TAYLOR MIDDLETON

2026 Regular Session Introduced by Jamie Burger

Missouri bill raises rural interstate speed limit from 70 to 75 mph, potentially reducing travel time but raising safety and fuel efficiency concerns on less-controlled roads.

Reported Duly Enrolled Rules, Joint Rules, Resolutions & Ethics Committee
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WeVote Research Nonpartisan
Bill Summary · SB 1408

Legislative bill overview

SB 1408 raises the maximum speed limit on rural interstates and freeways in Missouri from 70 mph to 75 mph. The bill has advanced through the Missouri Senate and is currently in the House for consideration.

Why is this important

Speed limits directly affect highway safety, fuel efficiency, and travel times. This 5 mph increase could meaningfully impact accident rates, emergency response effectiveness, and fuel consumption across Missouri's rural highway system, while also affecting how the state compares to neighboring states' speed regulations.

Potential points of contention

  • Safety concerns: Higher speeds reduce reaction time and increase crash severity; NHTSA data shows fatality rates increase with speed limits, particularly on rural roads where medical response times are longer
  • Fuel efficiency and emissions: Vehicles operate less efficiently at higher speeds, increasing fuel consumption and greenhouse gas emissions for drivers and environmental impact overall
  • Inconsistency with neighboring states: Speed limit variations across state borders can create driver confusion and coordination challenges for interstate commerce and travel patterns

Compiled from official sources — confirm details with the bill’s official record.

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