The spokeswoman, Bernice Alaniz, also revealed today that substance tests for the two employees placed on leave after the incident - a train operator and a traffic director - were negative. The Valley Transportation Authority, which has ruled out mechanical causes for the derailment, has declined to identify the employees.
At issue is exactly what sent the trolley off the tracks Friday night, injuring four people, including the train's operator. The train was attempting to switch to a single-track section near the Virginia station platform, which was temporarily closed for renovation. Meanwhile, VTA Chief Operating Officer Dan Smith has suspended single-tracking in the area - currently the only spot on the system where single-tracking was in place - in favor of a bus bridge.
Citing the ongoing investigation, Alaniz would not speculate on possible discipline for the employees this afternoon. That inquiry, however, could wrap up later this week, Alaniz said. Investigators have extensively interviewed the traffic director and plan to interview the train operator at length on Thursday, she said.
The training, an on-the-tracks refresher regimen that Alaniz said will ultimately include some 100 operators, started
"It was a significant event for the VTA," Alaniz said about Friday's accident. "Anytime you have anything go wrong you want to make sure you're beefing up, adding additional safety measures so that you avoid the potential for anything else to go wrong."
Contact Denis C. Theriault at dtheriault@mercurynews.com or (408) 920-5035.



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