Hospital admission rates per million hours travel (mhu^a) by travel mode, age, and sex, England 2007–2009.

amhu: million hours use, estimated using National Travel Survey average speed for all trips by this mode as not available by age and sex. bThese averages include both local roads and motorways/multi-lane divided roadways, where fatality rates are an order of magnitude lower than general purpose roads, but data are not available by age and sex. cThis figure is greatly exaggerated by under-measurement of under-aged driving. dThese figures are too high as V19.8 is a dustbin code, including some off-highway falls. eEstimates are too low, as some ‘unspecified location’ deaths will have been on-highway.