WAMU 88.5 : News

Filed Under:

'Heat Kink' Likely Cause Of Metro Derailment

Friday’s train derailment on the Green Line shut down service between Fort Totten and Prince George's Plaza stations.
http://www.flickr.com/photos/39017545@N02/3841738134/
Friday’s train derailment on the Green Line shut down service between Fort Totten and Prince George's Plaza stations.

Metro investigators say Friday's train derailment on the Green Line was likely caused by a misalignment of the rails, known as a "heat kink."

The incident occurred near the West Hyattsville station where three cars on the Green Line train derailed around 4:45 p.m., as the train entered a tunnel from an outdoor section of track. There were no reported injuries, and riders on the affected train evacuated safely, according to Metro officials.

The derailment shut down service between Fort Totten and Prince George's Plaza, causing significant delays for riders during the evening commute home. Shuttle buses substituted for trains in those areas.

Following the derailment, Metro imposed an immediate 35 mph speed restriction on trains operating in all above-ground territory, which caused delays on all other lines as well.

Heat kinks are short sections of misaligned track caused by the expansion of metal rails in extremely high temperatures. Metro officials say they are continuing to investigate whether any other factors were involved in the incident.

Green Line service between Fort Totten and Prince George's Plaza will remain suspended throughout the day Saturday as Metro crews work to repair the damaged track. During the maintenance, shuttle bus service will continue to operate between Fort Totten, West Hyattsville and Prince George's Plaza stations.

Track work on all other lines has been canceled this weekend.

WAMU 88.5

Art Beat With Lauren Landau, July 29, 2015

You can hear classical Indian music or learn about the Arab influences of a traditional Spanish dance form. 

WAMU 88.5

The Democracy Of The Diner

Whether the decor is faux '50s silver and neon or authentic greasy spoon, diners are classic Americana, down to the familiar menu items. Rich, poor, black, white--all rub shoulders in the vinyl booths and at formica counters. We explore the enduring appeal and nostalgia of the diner.

WAMU 88.5

D.C. Council Member David Grosso

D.C. Council Member and Chair of the Committee on Education David Grosso joins us to discuss local public policy issues, including the challenges facing D.C. Public Schools.

NPR

Twitter Faces Challenges As It tries To Balance Profitability, Popularity

The social network Twitter is popular with users, but that's not enough. It also needs to be profitable, and by its 140-character nature that's a challenge.

Leave a Comment

Help keep the conversation civil. Please refer to our Terms of Use and Code of Conduct before posting your comments.