Portsmouth City Council City Crest

Kill Your Speed

With the introduction of more safety cameras, and increased enforcement, adhering to the speed limit is becoming more and more important. Reducing your speed isn’t just about staying within the law, it’s about saving lives!

Recent research indicates that 90% of pedestrians hit at 20mph will survive, but 90% of those hit at 40mph will die.

  • Reducing your speed by just a few miles an hour can make the difference between life and death!
  • Your car can kill or seriously injure a child. Two thirds of all fatal injuries to school-aged children occur on the road.
  • Traffic is the biggest single killer of 12-16 year olds.
  • Statistics show that in 2000, nearly 40,000 children were killed or injured on Britain’s roads. 22,500 were pedestrians and cyclists.
  • Most child pedestrian accidents occur on residential roads.
  • More children are knocked down in the summer months.

Typical stopping distances

All motorists need to be aware that even a small difference in driving speed could have a drastic effect on stopping distance, risking a crash that could injure or kill someone.

MPH Thinking Distance Braking Distance Total Distance
20 6 metres 6 metres 12 metres (40 feet) or 3 car lengths
30 9 metres 14 metres 23 metres (75 feet) or 6 car lengths
40 12 metres 24 metres 36 metres (120 feet) or 9 car lengths
50 15 metres 38 metres 53 metres (175 feet) or 13 car lengths
60 18 metres 55 metres 73 metres (240 feet) or 18 car lengths
70 21 metres 75 metres 96 metres (315 feet) or 24 car lengths
* average car length = 4 metres

Brakes

The condition of the vehicle you are driving, particularly your brakes, can have a great effect on your ability to stop your vehicle. It is vital that you have your vehicle regularly serviced and MOT'd to check the condition and adjustment of your brakes.

Many people believe that having anti-lock brakes (ABS) means their stopping distance is reduced. A recent investigation by the Police has proved this to be untrue, and showed that anti-lock brakes only act to prevent skidding.

Tyres

You need good tyres to drive safely. They are your only contact with the road and affect the steering, braking and acceleration of your vehicle.

In order for a tyre to be legal, it must have:

1.6mm of tread across the central three-quarter band of tyre and throughout the full circumference, with visible tread on the remainder.

Do you know the speed limits?

Type of vehicle Built up area Single carriage way Dual carriage way Motorway
Cars and motorcycles (including car derived vans up to 7 tonnes maximum laden weight) 30 60 70 70
Cars towing caravans or trailers (including car derived vans and motorcycles) 30 50 60 60
Buses & Coaches (not exceeding 12 metres in overall length) 30 50 60 70
Goods vehicles (not exceeding 7.5 tonnes maximum laden weight) 30 50 60 70
Goods vehicles (exceeding 7.5 tonnes maximum laden weight) 30 40 50 60
Link 11  ( MB)