Too hot for the Washington Metro? [View all]

(Markette Smith — Washington, DC, WAMU) More details have emerged about the July 3 train car derailment that happened during rush hour near West Hyattsville, Md.

Metro engineers inspected the tracks a day before the derailment, but say they found no warning signs. The following day, a portion of the railing buckled from the pressure of prolonged 100-degree weather. This “heat kink” caused a six-car Green line train to jump the tracks.

Now, Metro officials say the only way to prevent that from happening again is to change the way they install railing system-wide.

Dave Kubecik, Deputy General Manager of Metro Operations, says the likelihood of a track buckling increases when temperatures climb higher than 85 degrees. So now, they’re trying new methods of installing rail that can withstand greater exposures to heat. .....................(more)

The complete piece is at: http://transportationnation.org/2012/07/13/dc-metro-we-need-rail-that-can-handle-hotter-temperatures/