Going well under the speed limit feels safer because you’re being cautious, but you’re actually creating hazards nobody expects. Slow drivers cause more problems on the road than most people realise, and being overly careful can be just as dangerous as speeding.
You’re creating massive speed differences.
When you’re doing 40 in a 60 zone, other cars are coming up behind you at 60. That 20mph difference means they have to brake hard and suddenly, which is when accidents happen.
Speed limits are designed for normal conditions, and going way below them disrupts the flow everyone else expects. Match the reasonable speed for the road unless conditions genuinely require you to slow down.
People make risky overtakes because of you.
Drivers stuck behind someone crawling along will eventually try to overtake, often in dodgy spots because they’re frustrated. Your slow driving is pushing people into dangerous manoeuvres they wouldn’t otherwise attempt.
If you’ve got a queue of cars behind you, you’re going too slow. Pull over when safe and let them past rather than forcing people into risky overtakes on blind bends or approaching junctions.
You’re not paying attention properly.
Driving too slowly often means you’re anxious and overthinking everything, which makes you less aware of what’s actually happening around you. You’re so focused on going slow that you’re missing important information about traffic and hazards.
Confidence comes from practice and matching the flow of traffic. Going slower doesn’t give you more time to react, it just means you’re disconnected from the rhythm of the road and not properly engaged.
You’re causing congestion for no reason.
One person going 30 in a 50 can back up dozens of cars behind them. This congestion increases everyone’s frustration and risk of accidents because bunched up traffic is always more dangerous than free flowing traffic.
Check your mirrors regularly and be aware of traffic building behind you. If you’re uncomfortable at normal speeds on certain roads, practice on quieter times or avoid those routes entirely.
Motorway slip roads become properly dangerous.
Joining a motorway at 40mph when traffic’s doing 70 is terrifying for everyone involved. You’re expecting other drivers to slam their brakes or swerve to accommodate you, which can cause multi vehicle incidents.
Use the full length of the slip road to accelerate properly. If you can’t or won’t get up to speed, you shouldn’t be on the motorway at all.
Your brake lights are constantly on.
Nervous slow drivers touch their brakes constantly for no clear reason, which confuses everyone behind you. They don’t know if you’re actually stopping or just being twitchy, creating a ripple effect of unnecessary braking.
Learn to control speed with the accelerator rather than riding your brakes. Constant brake lights make you unpredictable and train other drivers to ignore your signals when you’re actually stopping.
You’re blocking emergency vehicles.
When you’re plodding along well below the limit, emergency vehicles struggle to get past you. Your overcaution is literally slowing down ambulances or police trying to reach emergencies.
If you hear sirens, speed up to the limit if you’re under it and find a safe place to pull over. Emergency vehicles need traffic moving at reasonable speeds to navigate through.
Other drivers can’t predict what you’ll do.
Driving way below the limit is unexpected behaviour. Other drivers plan their moves based on everyone going roughly normal speeds, so when you’re going significantly slower, their calculations are wrong.
Predictability is more important than going slow. Do what other drivers expect at junctions and roundabouts. Being the one car doing something completely different makes you the hazard everyone else has to work around.
You’re probably in the wrong lane.
On motorways, sitting in the middle or outside lane going slowly forces faster traffic to undertake or weave around you. If you’re going slowly, you should be in the inside lane, not blocking overtaking lanes.
The outside lanes are for overtaking, not cruising slowly. Get over to the left unless you’re actively passing someone. Hogging lanes while going under the limit is both illegal and dangerous.
Roundabouts become a nightmare.
Approaching roundabouts at walking pace when you’ve got a clear gap means the car that was nowhere near you is now right there. Roundabouts need decisive speed to work properly, not creeping round at 5mph.
Assess the gap and commit to it at reasonable speed. Hesitating and crawling costs you the opportunity and makes following drivers angry because you wasted a gap they could’ve used.
Weather’s not always an excuse.
Doing 25 in a 40 when there’s a light drizzle is overcautious to the point of dangerous. Unless conditions are genuinely treacherous, modern cars handle rain fine at normal speeds.
Adjust your speed for genuinely bad conditions, but don’t crawl along when it’s just a bit wet. If you’re that uncomfortable driving in normal British weather, you need more practice.
You’ve forgotten how cars actually work.
Constantly pottering about in low gears at slow speeds is actually worse for your engine and uses more fuel than driving at the speed limit in the appropriate gear.
Your car runs better at proper speeds in higher gears. Learn how your car’s meant to be driven, and you’ll find it’s actually easier and more efficient at normal speeds.
Your insurance might not cover you.
Driving without due care includes going so slowly that you’re causing hazards. If you’re in an accident because someone rear ended you while you were doing 30 in a clear 60 zone, your insurance might not be on your side.
Driving too slowly can be considered careless driving under UK law. Drive at speeds appropriate for conditions and traffic flow, not at whatever crawl makes you feel safest, regardless of context.
