I'm not exactly sure. I'm 90% sure that there is not a left directional signal going east on Second Ave., but there maybe one going west on Second Ave.
ML/NJ
I couldn't visulaize it until I watched PCNC (WPXI's cable station). I consider it kind of a tricky intersection, but maybe I am remembering more. They interviewed an eyewitness (young woman) and they might have shown the intersection on that. I have dialup, so won't try to watch it on puter.
The traffic signals may not have mattered. For whatever reason, there is an incorrect belief prevalent around here that people turning left across traffic have the right of way. The driver may have been engaging in a standard "Pittsburgh turn." I always pause before moving forward through an intersection, even when I have right of way, because Pittsburgh turns are so common. (Of course, this just encourages them...sigh.)