Speed limits are important because they help keep everyone using the road safe. They are set to reflect the type of road and the potential hazards you may encounter, such as pedestrians, cyclists, junctions and other traffic. Driving within the speed limit gives you more time to identify hazards, react to changing situations and bring your vehicle to a stop.
The faster you travel, the greater your stopping distance and the more severe the consequences of a collision are likely to be. Remember that a speed limit is a maximum, not a target. Even when you are within the legal limit, you should reduce your speed when the road, traffic, visibility or weather conditions make it necessary.
Speed-Limit Example
Imagine you are driving on a road with a 30 mph speed limit. It is raining heavily and there are pedestrians and parked cars nearby. Although you are legally allowed to drive at up to 30 mph, 30 mph may be too fast for the conditions. Reducing your speed gives you more time to spot a hazard and stop safely.
Quick Self-Test
Why should you sometimes drive below the speed limit?
A) To save wear on road signs
B) Because speed limits only apply in good weather
C) Because road, traffic or weather conditions may make a lower speed safer
D) You should always drive at the speed limit