TAIC HIGHWAY SAFETY LAB

How Much Road Does a Large Truck Need to Stop?

Pick a speed and watch the stopping distance grow. Then change the road condition and see why extra space in front of a large truck matters.

Educational visualizer based on FMCSA stopping-distance guidance

SELECTED BENCHMARK

55 mph

419 ftFMCSA CDL total stopping-distance example

Perception

Reaction

Braking

STARTSTOPPING SPACE →

Perception distance

Reaction distance

Braking distance

PERCEPTION142 ft

REACTION61 ft

BRAKING216 ft

Dry / ideal conditions selected. Even here, a large vehicle requires substantial stopping space.

That is about 140 yards.

Do not cut closely in front of a large truck. Leave enough room for the truck driver to maintain a safe following distance.

Source basis: U.S. DOT / Federal Motor Carrier Safety Administration CDL stopping-distance examples and FMCSA Our Roads guidance. The 65 mph selection uses FMCSA's public-safety message that a large truck may require up to two football fields to stop. For education only; not for crash reconstruction or vehicle-performance prediction. FMCSA guidance →

KEEP TESTING YOUR HIGHWAY AWARENESS

Can the truck driver see you?

Try TAIC's interactive No-Zone Challenge and explore the visibility areas around a tractor-trailer.

Take the No-Zone Challenge →