Here's evidence BEFORE someone is injured or killed. CalTrans designed & constructed a truly hazardous cycle track, Gilman St. & 2nd near I-880 in Berkeley. Cycle track ends abruptly w/o pavement markings or signs indicating where bikes are intended to travel. Lots of jackass driver behavior here.
Surprise, surprise, CalTrans' own video simulation of what the Gilman cycle track was supposed to look like is ... no longer available on their website.
https://www.alamedactc.org/programs-projects/highway-improvement/i80gilman