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Posted at 9:18 PM ET, 07/17/2009

The Safeguard Metro Missed

By Vince Rinehart

By Steven A. Glazer
Bowie

Metro asserted recently that a remedy for the faulty track circuitry that may have caused the June 22 train crash near the Takoma Station, killing nine and injuring 80, does not exist and would have to be “invented.”

Yet The Post reported only a week earlier that such a device does exist. I looked it up. It is U.S. Patent No. 7,050,890, issued in 2006 to Ron Tolmei, whom The Post interviewed for the July 7 article “Sister Transit System Took Steps to Counter Hazard.” It’s a simple fix, too: It merely requires the rear-car transmitter of a train to check whether the front-car transmitter properly left a signal on the track receiver for trains behind it to slow down. If a commercial version doesn’t exist, it could be developed very easily.

By Vince Rinehart  | July 17, 2009; 9:18 PM ET
Categories:  Metro, transportation  
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