What to do if you break down on a UK motorway

Breaking down on a motorway is one of the more unsettling situations a driver can face, but there is a clear, official sequence of steps to follow, and knowing it in advance makes it far easier to act calmly if it actually happens. National Highways, the body responsible for England's motorways, sets out this guidance directly, and the same broad principles apply on Scotland's and Wales's strategic road networks too.

The first priority is to get off the live carriageway if at all possible. If your vehicle develops a fault or you notice a warning light, the safest response is to leave at the next exit or pull into a service area if you can reasonably reach one. If that isn't possible and the vehicle needs to stop sooner, move into the left-hand lane, put your hazard warning lights on, and try to coast towards a hard shoulder, layby or, on a smart motorway, a marked emergency refuge area (ERA). In most cases a vehicle that is still moving, even slowly, can coast far enough left to reach one of these rather than coming to a stop in a live lane.

Once safely stopped, pull in as far to the left as possible, leaving room to get out of the car safely, and keep your hazard lights on; if it's dark or visibility is poor, put your sidelights on too. Exit the vehicle using the left-hand doors where it is safe to do so, since this keeps you away from moving traffic, and get behind a safety barrier if there is one nearby. Everyone in the car should get out and move well away from both the vehicle and the live carriageway while waiting for help — official guidance is explicit that you should not go back to the vehicle, even if the weather is bad or it's cold or dark, and you should not attempt any repairs yourself.

One detail that catches a lot of drivers out: a reflective warning triangle should not be put out on a motorway. On an ordinary road, the Highway Code recommends placing a triangle at least 45 metres, around 147 feet, behind a broken-down vehicle, but a motorway's traffic speed makes stepping out to place one genuinely dangerous, and it's unlikely to give following traffic enough useful warning anyway. On a motorway, hazard lights and getting yourself well clear of the vehicle do the job a triangle would do elsewhere.

For getting help, call National Highways on 0300 123 5000, or use one of the free roadside emergency telephones sited at regular intervals along the motorway, which connect directly to National Highways and automatically share your location. If you have breakdown cover, calling your provider directly is generally the quickest route to recovery once you are safely off the carriageway. If your vehicle cannot be pushed to safety, or if you are in a live lane and unable to move to a refuge area, keep hazard lights on, stay inside the vehicle with your seatbelt fastened, and call 999 immediately, explaining you are in a live lane on a motorway so it is treated as a priority.

Smart motorways, which use technology and variable speed limits to manage traffic without a permanent hard shoulder in places, work on broadly the same principle, coast left, use hazard lights, and aim for the nearest emergency refuge area, though refuge areas can be spaced further apart than a continuous hard shoulder would allow. If a vehicle ends up stationary in a live running lane on a smart motorway and cannot be moved, the priority is exactly the same as being trapped in any live lane: stay inside with your seatbelt on, and dial 999 straight away. One further point worth knowing: drivers should not simply pull back out of an emergency refuge area under their own power once they feel ready. National Highways guidance is to contact them first, since traffic officers can warn approaching traffic or close a lane to allow a vehicle to rejoin the carriageway safely, rather than pulling out into fast-moving traffic unassisted.

None of this guidance changes the underlying goal, which is simply to get people out of the path of moving traffic as quickly and calmly as possible, and to let professionals handle both the recovery of the vehicle and safely managing traffic around it.

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