Traffic sign D1d: Compulsory direction: right

The D1 sign requires following the direction of the arrow; on the D1d it points right. Placed on an obstacle, it means: pass on that side (Highway Code, art. 69). On a worksite it is mounted on the barrier, often with flashing lights, so traffic goes around the works zone on the right side.

Mandatory signs are round and blue. They impose an obligation: follow a direction, use a cycle path or a footpath. On a worksite they guide traffic around an obstacle or towards a temporary passage.

Anyone who puts up a traffic sign on the public road for works needs the consent of the road authority: through the occupation permit or through a signage permit with a signage plan. Without that consent you may not put up the sign.