Speed and Stopping Distances

Speed• We measure speed in miles per hour• mph• 1 mile ≈ 1,600m or 1.6km • 1 mph ≈ 1.6kph

How fast do these things normally

travel?

Hit by a

vehicle at...

Hit by a

vehicle at...

9 in 10 chance

of being killed

1 in 5 chance

of being killed

1 in 40 chance

of being killed

Hit by a

vehicle at...

9 in 10 chance

of being killed

1 in 5 chance

of being killed

1 in 40 chance

of being killed

Hit by a

vehicle at...

9 in 10 chance

of being killed

1 in 5 chance

of being killed

1 in 40 chance

of being killed

Child

runs

out

Driver

sees

child

Driver

thinks

‘stop’

Foot on

brakes

Brakes

work

Car

stops

Stopping distance is...

Stopping distance is...

• The distance a vehicle travels from the time the driver decides to stop until the vehicle actually stops moving.

Child

runs

out

Driver

sees

child

Driver

thinks

‘stop’

Foot on

brakes

Brakes

work

Car

stops

Thinking distance Braking distance

Stopping distance is...

Stopping distances...

20mph

3 car lengths – 12m

40mph

9 car lengths – 36m

50mph

13 car lengths – 53m

60mph 18 car lengths – 73m

70mph 24 car lengths – 96m

30mph

6 car lengths – 23m

Don’t take risks....

...remember cars need time to stop!