Warning signs or flashing lights. If you see or hear emergency or incident support vehicles in the distance, be aware there may be an incident ahead (see Rule 219). Police officers and traffic officers may be required to work in the carriageway, for example dealing with debris, collisions or conducting rolling road blocks. Police officers will use rear-facing flashing red and blue lights and traffic officers will use rear-facing flashing red and amber lights in these situations. Watch out for such signals, slow down and be prepared to stop. You MUST follow any directions given by police officers or traffic officers as to whether you can safely pass the incident or blockage.
When passing the scene of an incident or crash do not be distracted or slow down unnecessarily (for example if an incident is on the other side of a dual carriageway). This may cause a collision or traffic congestion, but see Rule 283, below.
If you are involved in a crash or stop to give assistance
If you are involved in any other medical emergency on the motorway you should contact the emergency services in the same way.