RTD tests A Line commuter trains at 45 mph

The Regional Transportation District of Denver (RTD) last week began testing commuter trains at 45 mph along the new East Rail A Line.

This testing phase was intended to demonstrate that all warning signs, gate arms and other mechanisms at rail crossings were working properly, RTD officials said in a news release.

Pending test results, trains will continue to travel along the A Line at high speeds for the remainder of the testing program and during public service, RTD officials said.

"Testing at this speed is an important milestone for the project and gets us one step closer to opening the A Line this spring," said Greg Straight, RTD FasTracks Eagle P3 project director.

Expected to open in spring 2016, the 23-mile A Line will provide a link between downtown Denver and Denver International Airport.

RTD's commuter trains began testing at 45 mph last week.
Photo: Regional Transportation District of Denver