The word commuter derives from early days of rail travel in US cities such as New York, Philadelphia, Boston and Chicago, where, in the 1840s, the railways engendered suburbs from which travellers paying a reduced or ‘commuted’ fare into the city. Later, the back formations “commute” and “commuter” were coined therefrom. Commuted tickets would usually allow the traveller to repeat the same journey as often as they liked during the period of validity: normally, the longer the period the cheaper the cost per day.[2]