Originally Posted by
guv1976
I think that an attempted fifth swipe of a pay-per-ride card at the same location within 18 minutes will be rejected, with a "just used" message appearing at the subway turnstile or bus farebox. At least, there have been reports to that effect here on FT.
OK, I think you may be right. Not sure why I thought otherwise, perhaps the policy changed at some point, or else I'm just making things up.
http://mta.info/metrocard/compare.htm