Highway code - Vehicle stopping distances

There are two parts of stopping distance. First part is thinking distance and another is braking distance.

• If you are driving your vehicle 20 miles per hour then your thinking distance will be 6 metres and braking distance will be 6 meters therefore overall stopping distance will be 12 meters, which is about three car's length.

• When you drive your motor vehicle 30 miles per hour then your judgment distance will be 9 metres and braking distance will be 14 meters therefore overall stopping distance will be 23 meters, which is about six car’s length.

• While driving about 40 miles per hour then your thinking distance will be 12 metres, which is double then 20mph and braking distance will be 24 meters, which is four times than 20mph thus overall stopping distance will be 36 meters, which is about 9 car’s length.

• If you drive 50 miles per hour then your assessment distance will be 15 metres and braking distance will be 38 meters, which is about six times than 20mph thus overall stopping distance will be 53 meters, which is about 13 car’s length.

• While speed of your car is 60 miles per hour then your consideration distance will be 18 metres and braking distance will be 55 meters so overall stopping distance will be 73 meters, which is about 18 car’s length.

• Though haste of your vehicle is 70 miles per hour then your concern distance will be 21 metres and braking distance will be 75 meters so overall stopping distance will be 96 meters, which is about 24 car’s length.