Metro riders won a one-day reprieve from the latest round of fare increases on Monday after incomplete signs stymied riders on Sunday when new 25-cent charges took effect on paper fare cards.

Riders who used the agency’s own charts to put exact fare on their cards — a common phenomenon for frugal visitors who swarm the region on summer Sundays — found they couldn’t get out of the fare gates because they were a quarter short. The station signs showed the fares for SmarTrip users only, and did not include the extra 25-cent cost per trip for those using the paper cards.