DC Metro trains forced to run slower because of heat

Washington Metrorail trains running aboveground have been restricted to 35 miles per hour because of the excessive heat Monday, the city’s transit agency announced.

{mosads}With the area facing a heat index over 110 degrees Fahrenheit, all aboveground trains have been ordered to run at a slower speed due to high track temperatures.

The high temperatures can cause steel rails to expand and buckle, which can lead to derailments.

Metro warned riders in a tweet to expect widespread delays.

Trains are operating at a 35 mph speed restriction at all above ground stations due to high track temperatures. System-wide delays possible.

— Metrorail Info (@Metrorailinfo) July 25, 2016

The announcement comes as Metro implements the fifth phase of its massive, yearlong repair effort. The latest 12-day project, which involves continuous single-tracking along the Orange and Silver lines between the East Falls Church and Ballston stations in Northern Virginia, has been causing delays.