SEATTLE — Transportation officials say that passenger service along the rail line where an Amtrak train derailed earlier this week won’t resume service until advanced safety systems are in place.

Washington Department of Transportation spokeswoman Barbara LaBoe said Thursday that passenger trains will use the older rail line along the coast until “positive train control” technology is ready for the bypass route that was the scene of Monday’s derailment that killed three people and injured dozens, The Seattle Times reports . Those systems can detect a train that’s exceeding speed limits and slow the train.

The Amtrak train that derailed was on its inaugural passenger run along the new bypass line that was to speed service south of Tacoma. Investigators are still examining the cause of the crash but say the train was traveling 80 mph when it entered a curve that has a speed limit of 30 mph.


Information from: The Seattle Times, http://www.seattletimes.com