Mandatory signsUnited Kingdom

Learn traffic rules with clear explanations and visual examples in our illustrated book, designed to make studying simple and engaging.

Traffic signs

Traffic rules

Mandatory signs

A mandatory sign is a traffic sign that tells drivers what they must do. Instead of prohibiting actions, these signs impose obligations such as following a specific direction, using a particular lane, or keeping a minimum speed. Their purpose is to guide traffic safely and efficiently by ensuring that all road users follow the same required behaviour in places where it is necessary for order and safety.

Mandatory shared pedestrian and cycle path.

Mandatory divided pedestrian and cycle path.

1. Mandatory roundabout direction

This traffic sign indicates the mandatory direction around a roundabout. Traffic must circulate in the direction shown by the arrows. The sign does not itself determine priority; follow the applicable priority signs, traffic signals and local rules.

2. Turning left mandatory

This traffic sign indicates that turning left is mandatory at the junction ahead. Traffic must turn left and may not continue straight ahead or turn right.

3. Turning right mandatory

This traffic sign indicates that turning right is mandatory at the junction ahead. Traffic must turn right and may not continue straight ahead or turn left.

4. Pass obstacle on the left

This traffic sign indicates that traffic must pass an obstacle on the left. Keep to the left of the obstacle and follow any accompanying signs or road markings.

5. Pass obstacle on either side

This traffic sign indicates that traffic must pass an obstacle on either the left or the right. Use either permitted side while following the road layout and any accompanying signs or markings.

6. Pass obstacle on the right

This traffic sign indicates that traffic must pass an obstacle on the right. Keep to the right of the obstacle and follow any accompanying signs or road markings.

7. Mandatory left

This traffic sign indicates a mandatory direction to the left. Traffic must proceed to the left at the sign and may not continue straight ahead or to the right.

8. Mandatory right

This traffic sign indicates a mandatory direction to the right. Traffic must proceed to the right at the sign and may not continue straight ahead or to the left.

9. Driving straight ahead mandatory

This traffic sign indicates that driving straight ahead is mandatory. Traffic must continue straight ahead and may not turn left or right at the location to which the sign applies.

10. Mandatory path for cyclists

This traffic sign indicates a mandatory path for cyclists. Cyclists must use the designated path where the sign applies. Other road users may use the path only where the applicable signs or local rules permit them to do so.

11. Mandatory lane for buses

This traffic sign indicates a mandatory lane for buses. Buses must use the designated lane where the sign applies. Other road users may use the lane only where the applicable signs or local rules permit them to do so.

12. Mandatory shared pedestrian and cycle path

This traffic sign indicates a mandatory shared path for pedestrians and cyclists. Pedestrians and cyclists must use the same designated path rather than separate sections. They must share the space safely and follow the applicable local rules.

13. Mandatory divided pedestrian and cycle path

This traffic sign indicates a mandatory divided path for pedestrians and cyclists. Pedestrians and cyclists must use the section designated for them. Other road users may use the path only where the applicable signs or local rules permit them to do so.

14. Mandatory divided pedestrian and cycle path

15. Mandatory lane for buses and trams

This traffic sign indicates a mandatory lane for buses and trams. Buses and trams must use the designated lane or track where the sign applies. Other road users may use it only where the applicable signs or local rules permit them to do so.

16. Start of a minimum speed

This traffic sign indicates the start of a minimum speed. Road users covered by the sign must travel at or above the indicated speed when conditions allow. Driving more slowly may still be necessary because of traffic, weather, road conditions or another safety-related reason.

17. End of the minimum speed

This traffic sign indicates the end of the minimum speed. The previously indicated minimum speed no longer applies beyond this point. Continue to follow any other posted speed requirements and the applicable traffic rules.