The risk of crash and the probability of serious injury increases with the increased speed of the traffic. Hence the speed is regarded one of basic factors in traffic crash injuries. Vulnerable road users such as pedestrians, cyclist and motorcyclists have a high risk of severe or fatal injury when motor vehicles collide with them. This is because they are often completely unprotected or, in the case of a motorcyclist, havevery limited protection and the probability that a pedestrian will be killed if hit by a motor vehicle increases dramatically with speed. The studies from Organization for Economic Co-operation and Development (OECD) Annual Report, 2006 indicatesthat while most vulnerable (unprotected) road users survive if hit by a car travelling 30 km/h, the majority are killed if hit by a car travelling at 50 km/h or more.