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April 24, 2017

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Emergency personnel arrive at the scene of a collision between a big rig truck and a MUNI light rail vehicle at the intersection of Innes and 3rd streets on Friday, Aug. 1, 2014, in San Francisco, Calif.

AP Photo/San Francisco Chronicle, Michael Macor

Emergency personnel arrive at the scene of a collision between a big rig truck and a MUNI light rail vehicle at the intersection of Innes and 3rd streets on Friday, Aug. 1, 2014, in San Francisco, Calif.