Beginning Friday, DCTA will suspend service on three trains Fridays and Saturdays for positive train control testing.
Positive train control is a federally mandated safety improvement to passenger rail lines that helps operators avoid crashes.
The A-train’s suspended service includes two northbound and one southbound train. The trains will run but will be marked as “out of service.”
DCTA officials said rail conductors will be prepared to pick up passengers on the platform, but riders who regularly use the routes are asked to ride another train.
The suspended late-night trains on Fridays include northbound No. 5964, which leaves the Trinity Mills Station at 10:30 p.m. and arrives in downtown Denton at 11:02 p.m. Southbound No. 5963, which departs Denton at 11:15 p.m. and arrives at Trinity Mills at 11:47 p.m., is also suspended.
On Saturday mornings, northbound No. 5370, which leaves Old Town Station in Lewisville at 7:40 a.m. and arrives in downtown Denton at 8:02, is suspended.
The suspension will last until the next phase of testing, which requires all A-train lines to be out of service. Officials have not said when that last round of testing is expected to take place.