A ticket barrier is the gate that opens when a valid ticket is shown. Through the ticket barrier, the ticket barrier would not open, staffed ticket barriers.
They exist to stop fare evasion and also produce the data on where everybody travels, which is worth a great deal to an operator. Stations without one rely on inspectors instead.
1nounticket barrierThe gate that opens when a valid ticket is shown.
“My card didn't work, so the ticket barrier wouldn't open and a queue formed behind me.”
ticket barrier is a gate.
Practised in In the City, Railways