Truck stopping distance: how far does it take to stop?
Truck stopping distance for a laden HGV is about 85 metres at 80 km/h on dry roads, and roughly 130 metres when wet.
Logifie Team
Logistics Technology Experts
Truck stopping distance for a fully loaded HGV is approximately 85 metres at 80 km/h on a dry road, including reaction and braking distance, and roughly 130 metres when the road is wet. That is far longer than a car at the same speed, which is why EU motorways set lower HGV limits.
How is a truck's stopping distance calculated?
Stopping distance has two parts: the distance covered while the driver reacts, and the distance the truck travels while braking to a halt. For heavy vehicles, the EU benchmark is UN Regulation No. 13 , the UNECE braking standard for vehicle categories M, N and O. It sets a Type-0 test formula for a laden category N3 truck (over 12 tonnes) of roughly S = 0.15V + 1.33V-squared/115, where S is stopping distance in metres and V is speed in km/h. This standard is incorporated into EU type-approval law through Regulation (EU) 2019/2144 , which also mandated advanced emergency braking systems (AEBS) on new HGV types from 2022 and on all newly registered trucks from 2024, precisely because reaction-time delay accounts for a large share of total stopping distance. Fleets can use Logifie's Driver Assistant app to shorten that same delay by flagging hazards early.
How much longer is a truck's stopping distance than a car's?
Based on the UN Regulation No. 13 formula, a laden HGV typically needs roughly double the stopping distance of a car at the same speed, mainly due to its far greater mass and the physical limits of heavy-vehicle brakes and tyres. Applying that formula to standard EU HGV speed bands gives the following approximate figures for a laden truck.
| Speed | Approx. dry-road stopping distance (laden HGV) | Approx. wet-road stopping distance (laden HGV) |
|---|---|---|
| 50 km/h (urban) | approximately 35 metres | approximately 55 metres |
| 80 km/h (standard EU HGV motorway or dual-carriageway limit) | approximately 85 metres | approximately 130 metres |
| 90 km/h (upper EU HGV motorway limit in some member states) | approximately 105 metres | approximately 160 metres |
Wet-road figures apply a commonly cited increase of 50 percent or more over dry-road distances, reflecting reduced tyre-to-road grip on standing water. At 80 km/h, that gap is around 45 metres, roughly the length of four articulated trailers, which is why braking early matters far more for trucks than for cars.
How does this shape EU truck speed limits and following-distance rules?
These distances are why EU member states cap HGV speeds below car limits and why safety guidance recommends a much larger following gap behind a truck than behind a car. Limits vary by country, so drivers can check HGV speed limits for Germany or other EU markets before planning a route. The European Commission's road safety guidance for professional drivers recommends doubling the standard following-distance rule behind heavy vehicles, precisely because their stopping distance is so much longer than a car's.
Frequently asked questions
What is the legal minimum braking performance for a truck in the EU?
EU-registered trucks must meet the Type-0 test requirements of UN Regulation No. 13, which sets a minimum deceleration rate and a maximum stopping distance for laden heavy vehicles. This is a legal floor, not a target, and many modern trucks brake harder than the minimum once fitted with AEBS and electronic stability systems.
Does a loaded truck take longer to stop than an empty one?
Generally yes, because a laden truck carries far more kinetic energy at the same speed, and the brakes must dissipate that extra energy over a longer distance. EU type-approval testing accounts for this by setting separate performance requirements for laden and unladen states, so a compliant truck must still stop within a defined distance regardless of load.
How much following distance should you leave behind a truck?
Road-safety guidance generally recommends doubling the standard following gap behind an HGV compared with a car, reflecting its longer stopping distance. In practice this means leaving at least a four-second gap on dry roads, and considerably more in wet or low-visibility conditions.
Do EU truck speed limits already account for stopping distance?
Yes, national and EU-level HGV speed limits sit below car limits partly because of these longer stopping distances. This is also why speed limits and following-distance guidance tend to tighten further in poor weather, when wet-road braking performance drops.
To plan routes with confidence, check truck speed limits by country on Logifie's site.
