lights and HA 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.  Laws RTA1988, sects 35 &163, and as amended by TMA 2004, sect  6  highwaycodeuk.co.uk 144  282. 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.  283. If you are involved in a crash or stop to give assistance  ● use your hazard warning lights to warn other traffic  ● ask drivers to switch off their engines and stop smoking  ● arrange for the emergency services to be called immediately  with full details of the incident location and any casualties  (on a motorway, use the emergency telephone which allows  easy location by the emergency services. If you use a mobile  phone, first make sure you have identified your location  from the marker posts on the side of the hard shoulder)  ● move uninjured people away from the vehicles to safety; on  a motorway this should, if possible, be well away from the  traffic, the hard shoulder and the central reservation  ● do not move injured people from their vehicles unless they  are in immediate danger from fire or explosion  ● do not remove a motorcyclist’s helmet unless it is essential  to do so 