Tailgating UK: the law, fines and the two-second rule
Driving too close to the vehicle in front has been a careless driving offence since 2013, carrying a £100 fine and three penalty points. Highway Code Rule 126 sets the standard: at least a two-second gap in dry conditions, doubled to four seconds in wet weather.
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Is tailgating illegal in the UK?
Yes. Tailgating - driving too close to the vehicle in front - has been a criminal offence since 2013, when the government gave police the power to issue fixed penalty notices for careless driving without requiring a court hearing. It sits in the same legal category as middle lane hogging: both are forms of careless driving under the Road Traffic Act.
Highway Code Rule 126 defines the standard: you must not drive so close to the vehicle ahead that you could not stop safely if it braked suddenly. The two-second rule is the practical measure for applying this at any speed.
What is the two-second rule?
Rule 126 recommends using a fixed roadside object - a sign, a bridge, a lamp post - to measure your gap from the vehicle ahead. When the vehicle in front passes the object, count two seconds. If you reach the same point before you finish counting, you are too close.
In wet weather, the minimum doubles to four seconds. In fog, ice or other conditions that extend stopping distances, the gap should increase further. At 70mph on a motorway, a two-second gap equates to roughly 63 metres. Closing that gap saves almost no journey time but removes almost all your ability to react in an emergency.
How much distance is actually safe depends on speed - our guide to UK stopping distances gives the Highway Code figures at every speed and explains what extends them in real conditions.
What are the penalties?
A fixed penalty notice for careless driving carries a £100 fine and three penalty points. Where the tailgating is particularly dangerous, persistent or causes an accident, the case can go to court, where the maximum fine is unlimited and a ban is possible.
Police can also offer a driver improvement course as an alternative to fixed penalty points in some areas - this is discretionary. For drivers within two years of passing their test, three points brings them to the automatic revocation threshold under the New Drivers Act. Our guide to rules after passing your driving test explains what that means in practice.
The points that accumulate from a careless driving conviction add up quickly - our guide to how penalty points work explains bans, totting up, and the lower threshold for new drivers.
How do police enforce tailgating?
Enforcement has traditionally relied on traffic officers observing the behaviour directly. National Highways has run dedicated enforcement operations using unmarked HGV cabs with cameras positioned high above the road, able to capture following distances on motorways clearly. Drivers recorded tailgating have received warning letters and fixed penalty notices.
Dashcam footage submitted by other road users can also support enforcement. Many police forces accept dashcam submissions online. Enforcement is less frequent than for speeding, but National Highways campaigns have confirmed it is an active priority - particularly on motorways where the consequences of a rear-end collision at speed are most severe.
Why tailgating is more dangerous than it feels
At 70mph, the stopping distance in dry conditions is 96 metres - more than six car lengths. A two-second gap at that speed is roughly 63 metres, and reaction time before braking begins accounts for around 21 metres of that. A driver one car length behind you at motorway speed has almost no chance of stopping in time if you brake for an emergency.
Rear-end collisions are among the most common motorway accidents and the injuries are serious. Tailgating is a factor in around one in eight motorway accidents according to National Highways. The risk is not abstract. At 70mph in dry conditions, the Highway Code stopping distance is 96 metres - a gap most tailgaters close to less than two car lengths.
What to do if someone is tailgating you
Do not brake suddenly, slow down deliberately or swerve. These responses are dangerous and can themselves constitute careless driving.
The safest options are: signal and move left when safe to let the vehicle pass; maintain a steady speed; and increase your own gap from the vehicle ahead, which gives you more time to brake gradually if needed. Pulling off the road at the next safe opportunity removes the risk entirely. If the behaviour is sustained and dangerous, call 999 if it is ongoing, or report it to police via 101 after the journey with any dashcam footage you have.
Know the rules before the motorway
Long journeys are where tailgating is most common. If you are driving someone else's car for a trip and need cover, temporary car insurance provides comprehensive protection from one hour, arranged in minutes. Any claim stays within the short-term policy and the car owner's no claims discount is unaffected. For a broader refresher on motorway rules, our guide to motorway driving rules covers lane discipline, smart motorways and what to do in a breakdown.
Frequently asked questions
Is tailgating illegal in the UK?
Yes. Tailgating has been a careless driving offence since 2013, when police were given the power to issue fixed penalty notices without going to court. Highway Code Rule 126 sets the standard: you must not drive so close to the vehicle ahead that you could not stop safely if it braked suddenly.
What is the fine for tailgating in the UK?
A fixed penalty notice carries a £100 fine and three penalty points. If the case goes to court - for example if the tailgating caused an accident or was particularly dangerous - the fine is unlimited and a driving ban is possible.
What is the two-second rule?
The two-second rule is the practical application of Highway Code Rule 126. When the vehicle ahead passes a fixed object, count two seconds before you pass the same point. If you pass it sooner, you are too close. In wet weather, the minimum doubles to four seconds. At 70mph, a two-second gap is roughly 63 metres.
What should I do if someone is tailgating me?
Do not brake suddenly or deliberately slow down - this is dangerous and can constitute careless driving. Signal and move left when safe to let the vehicle pass, maintain a steady speed, and increase your own gap from the car ahead. Pulling off the road at the next opportunity removes the risk entirely.
How do police catch tailgaters?
Traffic officers can observe and act on the behaviour directly. National Highways has also used unmarked HGV cabs with cameras to identify tailgaters on motorways during enforcement operations, issuing fixed penalties and warning letters. Dashcam footage submitted by other drivers can support enforcement too.
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