Industry WIKI

In the ticketing system of the British rail network, a Permit to Travel provisionally allows passengers to travel on a train when they have not purchased a ticket in advance and the ticket office of the station they are travelling from is closed, without incurring a penalty fare.

The Key is a contactless ITSO-compatible smartcard developed by the Go-Ahead Group used on buses, trains and other forms of public transport across various areas of the United Kingdom.