Underground cell phone service in the Metropolitan Transportation Authority’s rail system has at last arrived, at least for downtown commuters. The MTA aims to roll out free cell service between Union Station and the Seventh Street/Metro Center Station by late March, the Los Angeles Downtown News reported Thursday.

The plan has been in the works for years, with delays coming primarily because of security concerns. The city Department of Transportation is working on a similar initiative to bring Wi-Fi service to all of its Commuter Express buses by the end of the year.