We pay for roads through our taxes: the poor pay proportionately more, and effectively subsidise the rich. It would be fairer to accept the ‘user pays’ principle, says Dr John Walker. Road pricing is already used worldwide to combat congestion and pollution, to compensate for falling revenues from fuel duty (‘gas tax’), to provide an alternative (and fairer) means of charging motorists than the 80-year old fuel tax and to improve the efficiency of and expand transport infrastructure. However, it could and s