General rules, techniques and advice for all drivers and riders
This section should be read by all drivers, motorcyclists, cyclists and horse riders. The rules in The Highway Code do not give you the right of way in any circumstance, but they advise you when you should give way to others. Always give way if it can help to avoid an incident.
Control of the vehicle
Speed limits
Rule 126
Used a fixed point to help measure a two-second gap
126
Stopping distances. Drive at a speed that will allow you to stop well within the distance you can see to be clear. You should
- leave enough space between you and the vehicle in front so that you can pull up safely if it suddenly slows down or stops. The safe rule is never to get closer than the overall stopping distance (see Typical Stopping Distances diagram, shown above)
- allow at least a two-second gap between you and the vehicle in front on roads carrying faster-moving traffic and in tunnels where visibility is reduced. The gap should be at least doubled on wet roads and increased still further on icy roads
- remember, large vehicles and motorcycles need a greater distance to stop. If driving a large vehicle in a tunnel, you should allow a four-second gap between you and the vehicle in front.
If you have to stop in a tunnel, leave at least a 5-metre gap between you and the vehicle in front.