'Heat Kink' Likely Cause Of Metro Derailment | WAMU 88.5 - American University Radio

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.

NPR

Kids' Films And Stories Share A Dark Theme: Dead Mothers

Why do so many animated movies star motherless kids? Sarah Boxer, a graphic novelist, cartoon-lover and mother, talks to NPR's Kelly McEvers about the phenomenon and the message it sends to children.
NPR

What If The World Cup Were Awarded For Saving Trees And Drinking Soda?

We thought you'd get a kick out of seeing how the four teams in the final World Cup matches stack up in global health and development.
NPR

What Will Become Of Obama's Request For Immigration Relief Funds?

NPR's Arun Rath talks to political correspondent Mara Liasson about the chances of a political agreement over how to handle the migration of thousands of Central American children.
NPR

Looking For Free Sperm, Women May Turn To Online Forums

Bypassing commercial sperm banks, thousands are logging on to websites where women can connect with men at no cost. Anecdotes abound, but the scope of the unregulated activity is unclear.

Leave a Comment

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