How to judge distance
Good drivers can accurately judge the distance they will
travel at different speeds and how long it will take them to get
there, allowing them to avoid possible crash situations, traffic
hold-ups, and predict when they may need to slow down or speed
Activity: Judging distance
- Get a stopwatch and practice until you can use it accurately
- As a passenger, wait for the car to be travelling at a steady
speed. Choose a point or object or near the side of the road that
you think is about three seconds away, and immediately start the
- Stop the stopwatch when the front bumper of your car gets to
- Check the stopwatch - if you have good judgement you will see a
reading that is extremely close to three seconds.
- If the reading is more than 3.1 seconds or less than 2.9
seconds, keep practicing. You will soon improve your
- When you are good at judging three seconds at different speeds,
try judging a point five seconds ahead of you, then 10, 15, 20, 25,
30, 60. Keep practising until you become accurate.
Some people judge distance in car lengths - the problem with
this is there is no way of checking it. A stopwatch gives you
Play the Road Space
game to practice judging distance.
Next activity: how to judge car
speed – yours and others.