Fast Facts
Crashes related to driving over the speed limit are prevalent from April through the fall with two peaks in July and October whereas crashes related to driving too fast for conditions are most prevalent in December and January.
You need time to stop
It can be difficult to stop in time. Here's why. (0:39) 
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What is stopping distance?
Stopping distance is the minimum distance needed to stop completely once you have seen an obstacle. Stopping distance includes the entire time from the moment an obstacle appears ahead (Perception-reaction time) until you bring your vehicle to a complete stop (Braking time).Perception-reaction time is the time it takes you to predict, decide and execute your decision. The perception/reaction time for the average* sober rested driver is 1.5 seconds.
Braking time refers to the time it takes to brake to a complete stop once you apply the brake. The faster your speed, the greater the distance you cover during braking. Greater braking distance will be needed if your brakes or tires are worn, if the vehicle is heavily loaded or if the road surface is wet or icy.
It is important to know antilock braking systems (ABS) do not necessarily reduce braking time or distance. In fact, braking time on wet pavement, on snow or gravel, is greater than with conventional brakes.
The increase in stopping distance required is not equal as your speed increases. As can be seen below, it almost doubles between 30 and 50 km/h and almost triples between 50 and 100 km/h.
Total Stopping Distance (on dry asphalt) |
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| Perception/ Reaction Time |
+ | Braking Time | = | Total Stopping Distance | |
| 30 km/h | 13 m | + | 5 m | = | 18 m |
| 50 km/h | 21 m | + | 14 m | = | 35 m |
| 70 km/h | 29 m | + | 28 m | = | 57 m |
| 100 km/h | 42 m | + | 56 m | = | 98 m |
| 110 km/h | 46 m | + | 68 m | = | 114 m |