Stopping distances

Stopping distance is what you cover while you react plus what you cover under braking, and the second part grows far faster than your speed does. That is the point the questions are testing.

40 km/h: 18 m
60 km/h: 36 m
120 km/h: 130 m

How far it takes to stop

Doubling 60 to 120 does not double the 36. It multiplies it by more than three, because only the reacting part grows in step with your speed.

Speed	Reacting	Braking	In total
40 km/h	5.6 m	12.4 m	18 m
60 km/h	8.3 m	27.7 m	36 m
120 km/h	16.7 m	113.3 m	130 m

Other distances the test asks about

Each of these turns up as its own question, and each has one answer.

Signal at least 50 m before you turn in town, and 100 m on a main road.
Put a breakdown triangle 30 m to 50 m behind the vehicle. A lorry drawing two trailers carries six of them.
Park no closer than 7.5 m to a corner.
A warning sign is normally posted about 100 m before the thing it warns you about.
Leave one car length behind for every 15 km/h you are doing.

Practise the distance questions

Reading a table once is not learning it. The app asks you these figures, marks you, and comes back to the ones you missed.

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