READING - W.H.O. Speed Management Manual
Speed has been identified as a key risk factor in road traffic injuries, influencing both the risk of a road traffic crash as well as the severity of the injuries that result from crashes. For instance, pedestrians have a 90% chance of survival if hit by a car traveling at a speed of 30km/h or below, but less than a 50% chance of surviving an impact of 45km/h or above.