"One often-heard claim about air travel is that it is 12 times safer than going by train and over 60 times less hazardous than travelling by car. However, such statistics are a little misleading. Air travel is only the safest mode of transport when fatalities are calculated in terms of distance travelled. If deaths are counted per unit of time travelled, trains are every bit as safe as planes, and cars only four times more hazardous. Then, again, if fatalities are computed in terms of the number of journeys taken, cars and trains are respectively three times and six times safer than planes."