Prohibitory signsUnited States

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Traffic signs

Traffic rules

Prohibitory signs

A prohibitory sign is a traffic sign that tells drivers what is not allowed on that specific road or in that situation. These signs impose restrictions such as no entry, no overtaking, no parking, speed limits, or bans on certain types of vehicles. Their purpose is to clearly indicate actions that are forbidden to ensure safety, maintain traffic flow, and protect vulnerable road users.

1. No entry

This traffic sign means no entry. Drivers may not enter from the direction in which the sign is placed.

2. Pedestrians prohibited

This traffic sign indicates that pedestrians are prohibited. Pedestrians may not enter or continue beyond the sign. Other road users may still be permitted unless another restriction applies.

3. Cyclists prohibited

This traffic sign indicates that cyclists are prohibited. Cyclists may not enter or continue beyond the sign. Other road users may still be permitted unless another restriction applies.

4. Trucks prohibited

This traffic sign indicates that trucks are prohibited. Trucks covered by the sign may not enter or continue beyond it. Any applicable weight threshold or vehicle-category limitation is determined by the sign, supplementary information and local rules.

5. Turning left prohibited

This traffic sign indicates that turning left is prohibited. A left turn may not be made where the sign applies. Other movements may still be permitted unless another restriction applies.

6. Turning right prohibited

This traffic sign indicates that turning right is prohibited. A right turn may not be made where the sign applies. Other movements may still be permitted unless another restriction applies.

7. Turning around prohibited (U-turn)

This traffic sign indicates that turning around (making a U-turn) is prohibited. A U-turn may not be made where the prohibition applies. Other movements may still be permitted unless another restriction applies.

8. Start of a speed limit

This traffic sign indicates the start of a speed limit. The displayed value is the maximum permitted speed from this point. The limit remains in force until it ends or is replaced according to the applicable traffic signs and local rules.

9. End of the speed limit

This traffic sign indicates the end of the previously indicated speed limit. From this point, follow any newly posted limit or the applicable default speed rules for the road and vehicle category.

10. Parking prohibited

This traffic sign indicates that parking is prohibited. Vehicles may not be parked in the area covered by the sign unless an exception applies. Brief stopping to pick up or drop off passengers or to load or unload goods may still be permitted where local rules allow it.