Families of narayangarh mugling bus accident victims
Traffic collisions can be classified by general type. Types of collision include head-on, road departure, rear-end, side collisions, and rollovers.Many different terms are commonly used to describe vehicle collisions. The World Health Organization use the term road traffic injury,[4] while the U.S. Census Bureau uses the term motor vehicle accidents (MVA),[5] and Transport Canada uses the term "motor vehicle traffic collision" (MVTC).[6] Other common terms include auto accident, car accident, car crash, car smash, car wreck, motor vehicle collision (MVC), personal injury collision (PIC), road accident, road traffic accident (RTA), road traffic collision (RTC), road traffic incident (RTI), road traffic accident and later road traffic collision, as well as more unofficial terms including smash-up, pile-up, and fender bender.Some organizations have begun to avoid the term "accident". Although auto collisions are rare in terms of the number of vehicles on the road and the distance they travel, addressing the contributing factors can reduce their likelihood. For example, proper signage can decrease driver error and thereby reduce crash frequency by a third or more.[7] That is why these organizations prefer the term "collision" to "accident". In the UK the term "incident" is displacing "accident" in official and quasi-official use.Historically in the United States, use of terms other than "accidents" had been criticized for holding back safety improvements, based on the idea that a culture of blame may discourage the involved parties from fully disclosing the facts, and thus frustrate attempts to address the real root causes.
There are demographic differences in crash rates. For example, although young people tend to have good reaction times, disproportionately more young male drivers feature in accidents,[18] with researchers observing that many exhibit behaviors and attitudes to risk that can place them in more hazardous situations than other road users.[16] This is reflected by actuaries when they set insurance rates for different age groups, partly based on their age, sex, and choice of vehicle. Older drivers with slower reactions might be expected to be involved in more accidents, but this has not been the case as they tend to drive less and, apparently, more cautiously.[19] Attempts to impose traffic policies can be complicated by local circumstances and driver behavior. In 1969 Leeming warned that there is a balance to be struck when "improving" the safety of a road:Conversely, a location that does not look dangerous may have a high crash frequency. This is, in part, because if drivers perceive a location as hazardous, they take more care. Accidents may be more likely to happen when hazardous road or traffic conditions are not obvious at a glance, or where the conditions are too complicated for the limited human machine to perceive and react in the time and distance available. High incidence of crashes is not indicative of high injury risk. Crashes are common in areas of high vehicle congestion but fatal crashes occur disproportionately on rural roads at night when traffic is relatively light.This phenomenon has been observed in risk compensation research, where the predicted reductions in accident rates have not occurred after legislative or technical changes. One study observed that the introduction of improved brakes resulted in more aggressive driving,[21] and another argued that compulsory seat belt laws have not been accompanied by a clearly attributed fall in overall fatalities.[22] Most claims of risk compensation offsetting the effects of vehicle regulation and belt use laws has been discredited by research using more refined data.
There are demographic differences in crash rates. For example, although young people tend to have good reaction times, disproportionately more young male drivers feature in accidents,[18] with researchers observing that many exhibit behaviors and attitudes to risk that can place them in more hazardous situations than other road users.[16] This is reflected by actuaries when they set insurance rates for different age groups, partly based on their age, sex, and choice of vehicle. Older drivers with slower reactions might be expected to be involved in more accidents, but this has not been the case as they tend to drive less and, apparently, more cautiously.[19] Attempts to impose traffic policies can be complicated by local circumstances and driver behavior. In 1969 Leeming warned that there is a balance to be struck when "improving" the safety of a road:Conversely, a location that does not look dangerous may have a high crash frequency. This is, in part, because if drivers perceive a location as hazardous, they take more care. Accidents may be more likely to happen when hazardous road or traffic conditions are not obvious at a glance, or where the conditions are too complicated for the limited human machine to perceive and react in the time and distance available. High incidence of crashes is not indicative of high injury risk. Crashes are common in areas of high vehicle congestion but fatal crashes occur disproportionately on rural roads at night when traffic is relatively light.This phenomenon has been observed in risk compensation research, where the predicted reductions in accident rates have not occurred after legislative or technical changes. One study observed that the introduction of improved brakes resulted in more aggressive driving,[21] and another argued that compulsory seat belt laws have not been accompanied by a clearly attributed fall in overall fatalities.[22] Most claims of risk compensation offsetting the effects of vehicle regulation and belt use laws has been discredited by research using more refined data.
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