Idaho Road Signs Guide (2026)

Come to a complete stop. Yield to all pedestrians and cross traffic before proceeding.

Slow down and give the right-of-way to traffic and pedestrians. Stop if necessary.

You may not enter this road or lane. Usually marks a one-way road.

You are going in the wrong direction. Stop and turn around safely.

The maximum lawful speed on this road. Always obey posted signs.

Turning left is prohibited at this intersection.

Making a U-turn is prohibited here.

Traffic flows in one direction only. Do not enter from the opposite direction.

Stay to the right side of a median or divider.

Passing other vehicles is not allowed in this area.

A sharp curve is ahead. Slow down and stay in your lane.

Lanes are merging. Adjust speed and position to allow safe merging.

Pedestrians may be crossing. Slow down and be prepared to stop.

A railroad track crosses the road. Stop if lights flash or gate is down.

A speed bump is ahead. Slow down to avoid vehicle damage.

Road becomes slippery when wet. Reduce speed in rain or ice.

Wild animals may be crossing. Watch out — especially at dawn and dusk.

The road ahead is divided by a median. Keep right.

Indicates a highway exit ramp and its number.

Shows the direction to a city or destination.

Tells drivers which lanes go to which destinations.

Blue signs indicate nearby services: gas, food, lodging, hospitals.

Brown signs indicate parks, recreational areas, or historic sites.

A school is nearby. Slow to the posted speed limit when children are present.

Children may be crossing. Stop for a crossing guard's signal.

Workers are present on or near the road. Slow down and be alert.

The regular route is closed. Follow detour signs to an alternate route.

A lane ahead is closed due to construction. Merge safely.