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Final testing underway on B Line

Exciting things are happening on the B Line as RTD and its contractor, Denver Transit Partners (DTP), have started the final testing phase on the line. The testing is a dual-phase System Performance Demonstration (SPD). It's an approach used by DTP to verify the readiness for operating and maintaining the electric commuter rail line.

How does SPD work?

SPD involves two phases:

  1. Testing of the complete integrated commuter rail network including subsystems, operating personnel and operating procedures.
  2. Demonstrate readiness to provide safe and reliable passenger service, and ensure the commuter rail components are achieving sufficient reliability for sustainable service.

"The System Performance Demonstration is important because it will test the anticipated revenue service operations, and simulate how the commuter rail will respond in a variety of operational situations," said Greg Straight, RTD project director for the RTD B Line. "In addition, it will validate that the operations and maintenance staff are fully trained on the system and ensure everyone is ready for revenue operations."

What to expect during final testing

Trains will be traveling in both directions along the line between Union Station and Westminster Station during all hours of the day and evening. Remember to stay safe when you're around the new train line.

  • Do not touch or throw objects at the overhead power lines or climb on the power poles. They carry 25,000 AC volts of electricity.
  • Never trespass on any train track or construction sites—it is illegal and dangerous.
  • Stay off train platforms until they are open to the public.
  • Cross the tracks only at designated crossings.
  • Always follow safety signs and obey warning devices such as flashing red lights and gate arms.
  • Stay alert and look both ways for a train—you may not hear them coming.

The B Line is scheduled to open July 25 and it is part of the Eagle P3 project, the nation’s first public-private partnership for transit. The B Line will eventually be constructed to Boulder and Longmont when additional funding becomes available.