Interstate Route Marker Sign
Identifies the interstate highway you are on or approaching
Shield
Shape
Guide
Category
What to do
Use it to confirm you are on the correct route.
Tips
Even-numbered interstates run east–west; odd-numbered run north–south.
Common mistake
Confusing interstate shields with US route markers
About guide signs
Guide signs are green (directions and distances) or blue (services like gas, food, and hospitals). They don't command an action, but the written test still asks what their colors and symbols mean so you can navigate without hesitation.
Frequently asked questions
What does the Interstate Route Marker Sign mean?
Identifies the interstate highway you are on or approaching
What should you do at a Interstate Route Marker Sign?
Use it to confirm you are on the correct route.
More guide signs
Left Turn ArrowRight ArrowExit 25 MPHRamp 30 MPHHOV 2+ Lane AheadHOV Lane EndsHospitalGas / Fuel
All 115 signs
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