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Methods for measuring motorcycle speeds and their implications for understanding ‘safe speeds’.
New Zealand traffic accident data show that motorcycles account for 13% of road crash fatalities but that motorcyclists undertake only around 0.5% of travel time or trips. From these statistics, it is determined that motorcyclists are around 16-23 times more likely to be involved in a fatal or injury crash than car drivers. The high relative crash risk for motorcycles is replicated in every country; only the magnitude of the estimate varies, as motorcycles are always the most dangerous form of travel. One report estimates that motorcycles have a relative crash risk as high as 34 times that of cars.