![](https://www.railwayage.com/wp-content/uploads/2024/06/POP-Vintage_Tix-Xfers-315x168.jpg)
Proof of Payment Past and Present: Part 1 – Tickets and Transfers
Fare collection has long been one of the hottest topics in public transit. Opinions range about how much a ride costs or how much it should cost, who is paying and who is not paying. Often forgotten in all the talk about fares is the history behind Proof of Payment systems, or “POP.”