25
mph
Vehicle speed when the pedestrian becomes visible
02040608090 mph
100 ft
How far away the pedestrian is when the driver first notices them
Distance to Full Stop
Reaction
—
Braking
—
Total
—
Impact Energy
—
vs 20 mph
≈ falling from
—
Pedestrian (at impact speed)
Fatality risk
—
Severe injury
—
Survival
—
Collision Timeline
Where the vehicle is when it reacts, brakes, and (if it doesn't stop in time) reaches the pedestrian.
🚗
🚶
Reaction
Braking
Pedestrian
Full stop distance vs 25 mph residential
1.0×