Got pulled by a bike-mounted cop this morning. He said I crossed on a red light and for me to please obey all traffic laws. I said I thought I made a legal move; he disagreed, gave me a warning and we left it at that.
Here's the situation: morning commute, near my destination is a sidewalk that's posted "Bikes Use Sidewalk." I use it because it's convenient and allows me to go two blocks against a one-way street.
To cut to the chase: I made a left turn from the sidewalk at a driveway. In the diagram below, S1 is a ped signal, which was green; S2 is a traffic signal for the driveway, which was red; and S3 is a signal for the one-way through traffic.
My opinion is that as a vehicle I made a legal left turn after yielding to oncoming traffic. The only signal I had was S1, it was green, which tells me it was safe to enter the driveway.
The cop wanted me to stop at S1, wait for S2 to turn green and cross as a pedestrian.
The REAL problem here is the city's dumb decision to put vehicles (bikes) on the sidewalk opposing one-way traffic and then providing no guidance or ambiguous guidance on how to make turns from the sidewalk. Had the cop ticketed me, I would challenge it in court, and that would have been real interesting to see how a judge would handle something like this.
Anyway, I nominate this "opposing flow sidewalk" for the Bad Bike Facility Hall of Fame: