You may see some extra money on your SmarTrip card this summer.
Metro says a technical error caused some riders to be under- or overcharged for their fare for years. If you were overcharged, you may get a refund.
The error affected fewer than 5 percent of rail trips, and Metro says most of the incorrect fares were off plus or minus 5 cents.
The discrepancies caused the transit agency to lose about $124,000 over the course of a year.
Any customer who was overcharged more than $2 between 2015 and 2017 will received an automatic credit on their registered SmarTrip card this summer, the agency said.