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Interstate Shield: What It Means & What To Do

Interstate Shield (M1-1) - shield red, white, and blue route sign: This road is part of the Interstate Highway System
MUTCD CodeM1-1
CategoryRoute Markers
ShapeShield
ColorRed, white, and blue

What Does the Interstate Shield Mean?

This road is part of the Interstate Highway System. The number identifies the specific route.

About This Sign

The red, white, and blue shield-shaped sign identifies Interstate highways. Even-numbered interstates run east-west; odd-numbered run north-south.

Other Route Markers

US Route (M1-4) - shield black and white route sign: This road is a US highway

US Route

M1-4

State Route (M1-5) - varies by state varies by state route sign: This road is a state highway

State Route

M1-5

County Route (M1-6) - pentagon blue with white route sign: This road is a county road

County Route

M1-6

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Interstate Shield - DMV Road Sign Meaning & Test Guide | DMV IQ