WASHINGTON - Metro said up to 5 percent of riders have been charged the wrong fares for nearly three years.
Officials with the Washington Metropolitan Area Transit Authority said a distance calculating error caused it to collect nearly $372,000 less than it should have since 2014.
Officials said most trip calculations were off by 5 cents or less from what they should have cost.
Riders who were undercharged wouldn't be asked to make up the difference, Metro said.
Riders who were overcharged should receive a partial refund to their SmarTrip card in the summer for net overcharges of $2 or more, according to officials.
Metro said technical corrections were being made to fix the distance calculation errors.