General Driving Rules, Signals & Speed Limits

You MUST NOT use hazard warning lights while driving or being towed unless you are on a motorway or unrestricted dual carriageway and you need to warn drivers behind you of a hazard or obstruction ahead. - [Rule 116](rule_116)

According to the national speed limits table, cars towing caravans or trailers have a maximum speed limit of 50 mph on single carriageways. - [Rule 124](rule_124)

A broken white line marks the centre of the road. - [Rule 127](rule_127)

In England and Wales, the driver MUST NOT smoke or allow anyone to smoke in an enclosed private vehicle carrying someone under 18. - [Rule 148](rule_148)

If the police want to stop your vehicle they will attract your attention by flashing blue lights, headlights or sounding their siren or horn, usually from behind. - [Rule 106](rule_106)

Coasting (travelling in neutral or with the clutch pressed down) reduces driver control because engine braking is eliminated, vehicle speed downhill will increase quickly, and steering response will be affected. - [Rule 122](rule_122)

Reflective road studs are used to mark the carriageway. Amber studs mark the central reservation. - [Rule 132](rule_132)

You MUST NOT use your horn while stationary on the road OR when driving in a built-up area between the hours of 11.30 pm and 7.00 am except when another road user poses a danger. - [Rule 112](rule_112)

Adapt your driving to the appropriate type and condition of road. Be considerate. You MUST NOT throw anything out of a vehicle (littering). - [Rule 147](rule_147)

You should leave enough space between you and the vehicle in front so that you can pull up safely. Allow at least a two-second gap between you and the vehicle in front on high-speed roads and in tunnels. - [Rule 126](rule_126)