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Re: Question about LIRR E-Ticket

Posted by Stephen Bauman on Tue Oct 19 09:07:17 2021, in response to Question about LIRR E-Ticket, posted by Jeff Rosen on Mon Oct 18 14:50:31 2021.

It would appear there's a shortcoming in the algorithm they are using for detecting a valid e-ticket.

It obviously does not distinguish between the direction of travel, when the conductor initially scans the ticket. From your description, it appears they use only elapsed time to check the ticket's continued validity. We don't know whether your ticket would have been valid for the return trip, had the conductor scanned it between Jamaica and Penn Sta on your initial trip. That experiment might give us more information as to where the problem lies.

I discovered a similar situation with the bus transfer algorithm for Metrocard. One can take a round trip on a single fare, provided different routes are used for the going and return trips.

The old paper ticket procedure was immune to a conductor's omission.

The paper ticket procedure wasn't immune to a savvy commuter. Back in the day, when LIRR ten trip tickets offered a significant discount and were valid for 1 year, a friend saved some money on his commute from Flushing to Penn Sta. He kept 10 trip-tickets for Flushing-Penn Sta and Woodide-Penn Sta in his wallet. If the conductor wasn't able to punch his ticket between Flushing and Woodide, he produced the Woodside ticket. This was about 1/3 of the time. He also carried a Wooside-Flushing 10-trip ticket for the return trip.



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