REACTION + BRAKING SIMULATOR

How fast can you react?

Set the conditions. Watch the road. When something changes, brake when you think you need to. Then see how much distance your reaction used.

START THE TEST → Click, tap, Space, B, or Enter to brake.

01 / DRIVE

Pick a driving scene.

Each scene has a different road condition and hazard. Your reaction time is measured from the moment the hazard begins.

SPEED 70 km/h

READY

HAZARD 70 m

WHEN YOU START Keep your eyes on the road.

Too soon. Wait for the hazard.

70 KM/H

DRY MOTORWAY REACTION: LIVE TEST

SPACE
BRAKE

Set your conditions. Then start the test.

YOUR RUN

Ready when you are.

Your reaction and stopping breakdown will appear here after the run.

Reaction time—seconds

Reaction distance—meters

Braking distance—meters

Total stopping distance—meters

HAZARD APPEARSHAZARD

REACTION

BRAKING

WHAT HAPPENED?

Your live test will explain how much road disappeared before braking even started.

BIGGEST FACTOR

—

We’ll compare speed, your reaction, and available grip.

TRY NEXT

Run once first. Then change just one thing and compare.

02 / EXPERIMENTS

Test one variable at a time.

These reference comparisons use a fixed 1-second reaction so you can isolate what speed and grip do to stopping distance.

Speed

Dry road · new tires · 1.0s reaction

Road surface

70 km/h · new tires · 1.0s reaction

Reaction

70 km/h · dry road · new tires

03 / LEARN

What makes up stopping distance?

The car is still moving while you react.

Reaction distance

The car keeps moving from the moment a hazard appears until you actually begin braking. Higher speed means more road passes underneath you during the same reaction time.

Braking distance

Once the brakes are applied, speed and available grip determine how much more road the vehicle needs before it stops.

REACTION DISTANCE+BRAKING DISTANCE=TOTAL STOPPING DISTANCE

Educational simulation only.

Real stopping distances vary with the vehicle, brakes, tires, road, weather, slope, driver, and many other conditions. Do not use these results to choose a real-world driving speed or following distance. Follow local road rules and actual conditions.