Metro plans to start letting its riders use an online site to reload money onto their farecards later this summer, allowing commuters to skip lines at vending machines and stop surfing on moving buses. The agency plans to open the online site to all registered SmarTrip users by the end of August, General Manager Richard Sarles said Thursday.

Riders will be able to use a credit or debit card to add more money. They also can choose to have fare added automatically if their balances fall below pre-determined amounts.