If you’ve ever made a mad dash from the train to the bus only to see it pull away, leaving you to wait 30 minutes for the next bus, Metro has an improvement on the way that is sure to please.

The transit agency is rolling out a new test pilot starting Saturday: a strobing light that will alert bus drivers outside Metrorail stations that a train is arriving and to wait for passengers.

The lights will be used during off-peak hours (9 a.m. to 2 p.m. and 7:30 p.m. to midnight) when bus waits might be 30 minutes or longer. The light will allow bus drivers to wait up to five minutes before departing, allowing people to make their connection.

Metro is starting the pilot at the Greenbelt station for the C2 bus route stop before pausing for a few weeks as Metro does rail construction at the station through Sept. 4.

The bus transfer lights will eventually roll out to other select bus stops that serve lower-frequency routes.