Fare Evasion

Fare evasion, as distinct from fare avoidance, is the act of illegally travelling on public transport, having deliberately not purchased the required ticket to travel (having had the chance to do so). It is a problem in many parts of the world, and revenue protection officers operate on many systems. Often ticket barriers, manned or automatic, are in place at stations etc, to ensure only those with valid tickets may access the transport.
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The unlawful use of transit facilities by riding without paying the applicable fare. (FTA1)