Safe driving and handling of a towing vehicle with trailer
Why a combination behaves differently
The trailer has no engine and no steering of its own; it follows the ball. Sideways forces from cornering, crosswind or a passing lorry act on a mass you cannot feel through the steering until it is already large.
Core techniques
- Cornering: the trailer cuts inside the curve. Take bends wider and slower and watch its inner wheel in the mirror.
- Braking: total mass can be double the car's, so braking distance grows sharply. Brake earlier and progressively; on long descents select a lower gear and use short, firm brake applications rather than riding the pedal.
- Snaking: ease off the accelerator, keep the wheel straight and avoid hard braking. If it continues, slow gently and stop.
- Overtaking: you need far more clear road. At 80 km/h you cover about 22 m every second.
- Reversing: steering is opposite to a solo car; use a second person or check for yourself.
- Crosswinds: slow down before an exposed bridge, not on it.
Worked example
At 80 km/h (22.2 m/s) you want to pass a 16 m lorry doing 70 km/h. Closing speed is 2.8 m/s, so covering the lorry plus your car plus margins - roughly 35 m - takes about 12.5 s, during which you travel 280 m. If you cannot see at least 300 m of clear road, do not start.
Traps that cost marks
Braking hard the moment the trailer sways; turning in too early at junctions; tailgating a lorry so the road ahead disappears; forgetting the trailer is longer than the gap you judged.