摘要: |
Speed is an important element in defining the serviceability and safety of any traffic system. It is at the core of any road traffic injury, which influences both the risk as well as the severity of outcome in a road crash. Speeding (driving above the posted speed limit) and inappropriate speed (driving too fast for the prevailing road conditions) are recognised as major contributory factors in both the number and severity of traffic crashes. According to the World Health Organisation, 40-50% of the people across the world drive above the speed limit (WHO, 2017). Controlling vehicle speed can prevent the occurrence and reduce the impact of a crash, lessening the severity of injuries sustained by the victims. In 2018, WHO suggested well-enforced road safety laws on speeding, drinking and driving, use of seat-belts, child restraints, and motorcycle helmets can prevent millions of lives lost for the road traffic incidences (WHO, 2018).
According to the 12th global road safety performance targets (UNGA, 2017), the proportion of vehicles travelling over the posted speed limit should be halved and a significant reduction in speed related injuries and fatalities should be achieved by the year 2030. Setting and enforcing speed limits is a key component of comprehensive speed management and is also a part of an integrated road safety approach involving the protective quality of roads, roadsides, vehicles and human tolerance thresholds for fatal and serious injury. |