Interstate Route Marker
Sign Details
Category
gavel guide
Shape
hexagon shield
Color
palette blue/red/white
MUTCD Code
tag M1-1
What to do at a Interstate Route Marker Sign
Identifies an interstate highway by its assigned route number.
- Recognize the sign by its shield shape and blue/red/white color combination.
- Adjust your speed and lane position based on the message above.
- Watch for related signs and pavement markings nearby.
warning Common Test Mistakes
On the written exam, applicants frequently miss questions that:
- Confuse a shield shape with a similar one (e.g. octagon vs hexagon).
- Mistake the meaning of color (red = prohibition; yellow = caution; green/blue = guidance).
- Skip the action requirement — knowing what a sign means isn't the same as knowing what to do.
quiz
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Practice Interstate Route Marker Questions arrow_forward
