Motorways are statistically the safest type of road in the UK — fatality rates per mile driven are lower than on A-roads or rural roads. But they don’t feel that way to many drivers, particularly those who passed their test recently or who have simply avoided motorways for years. The speed, the lane discipline, and the sheer volume of traffic can be intimidating. Here’s practical guidance on navigating motorways confidently and safely.
Before You Join
Check your car is fit for motorway driving. Tyre pressures should be correct — under-inflated tyres are a significant risk at sustained high speeds. Screen wash should be full — motorway driving generates far more windscreen contamination from lorry spray than town driving. Check fuel before joining; don’t plan to fill up at the first service station unless you know how far it is.
On unfamiliar motorways, have a rough sense of the junction you need before you start — you’ll have much less time to read and react to signs than on an A-road. If you’re using a sat nav, set it before you move.
Joining the Motorway
The slip road is an acceleration lane — its purpose is to allow you to reach motorway speed before joining the flow of traffic. Use all of it. By the time you reach the end of the slip road, you should be at or close to the speed of traffic in the left lane (which on a typical motorway will be 60–70mph).
Look in your mirrors, check your blind spot, and signal before moving onto the main carriageway. Traffic already on the motorway has priority — adjust your speed to merge smoothly rather than forcing other drivers to brake. The give-way line at the end of a slip road is rarely reached, but it exists; if the motorway is genuinely congested and there’s no gap, you stop and wait.
Lane Discipline
The Highway Code is clear: keep left except when overtaking. This is not optional. The left lane is the normal driving lane. The middle lane is for overtaking traffic in the left lane. The right lane (on a three-lane motorway) is for overtaking traffic in the middle lane.
Middle-lane hogging — sitting in the middle lane when the left lane is clear — is a specific offence that police can and do ticket under the careless driving provisions. It causes frustration, forces overtaking vehicles to undertake, and contributes to congestion.
The practical discipline: when you’re not actively overtaking, return to the left lane. If you catch up with slower traffic in the left lane, signal, move to the middle lane, overtake, signal, return left. It feels more complex written down than it is in practice.
Speed and Stopping Distances
The motorway speed limit is 70mph. It is a limit, not a target — in poor conditions (rain, fog, spray from lorries), appropriate speed may be considerably lower.
Stopping distances at motorway speeds are substantial. The thinking distance alone at 70mph (before your foot reaches the brake) is around 21 metres — the Highway Code’s two-second rule gives you the minimum safe following distance in dry conditions. In wet conditions, double it. Following too closely is one of the most common causes of motorway accidents and one of the most visible pieces of bad motorway driving.
Overtaking Lorries
Passing a large lorry at motorway speeds generates a brief pressure wave — you feel the car pushed slightly away from the lorry as you pass. This is normal and predictable. Maintain your lane position and don’t overcorrect.
In wet weather, lorry spray can temporarily reduce visibility to near zero as you pass. Be prepared for this. Wiper speed may need to increase momentarily. Don’t brake sharply mid-overtake.
Tiredness and Long Journeys
Driver fatigue is responsible for a significant proportion of motorway accidents. The advice to take a break every two hours is not arbitrary — it reflects the point at which concentration demonstrably deteriorates for most drivers.
The only cure for tiredness while driving is sleep. Caffeine delays but does not prevent the effects. If you feel genuinely drowsy at the wheel, pull off at the next services, park, and rest. Do not try to push through.
On long motorway journeys, plan service stops in advance rather than hoping to make it to the destination. A 20-minute stop costs very little time relative to the risk of continuing tired.
Breakdowns on the Motorway
If your car develops a problem, move left immediately and aim for the hard shoulder or, if on a smart motorway, the next Refuge Area. Switch on hazard lights. If the car stops on the carriageway, stay in your lane with hazard lights on and do not get out on the traffic side.
On the hard shoulder, exit via the passenger door (away from traffic), get behind the barrier, and call for breakdown assistance from there. Do not stand between the car and the carriageway.
Smart Motorways
On All Lane Running smart motorways, there is no permanent hard shoulder — it’s a live running lane. Refuge Areas are marked with blue signs and SOS telephones. Know how to use them before you need them. Obey the red X signals overhead — they close a lane for a reason, and ignoring them is now a criminal offence enforced by cameras.
Motorway driving, once understood, is the most straightforward kind — long sight lines, controlled junctions, no cyclists or pedestrians. The key is preparation, patience, and appropriate following distance.
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