My commute is down market st, 4th to Castro, which is particularly bad. I bike. What happens is that at _every_ major market st crossing, cars will run their red (actual red, not yellow), and then stop just before the crosswalk due to pedestrians beginning to cross. They'll remain stopped in the middle of cross lane traffic for essentially the entirety of the light (Hey, if they didn't get to go why should anyone get to?!) , though sometimes they'll try to wedge themselves through pedestrian traffic, because driving a car turns people into assholes and necessitates neglecting the safety of others. It is possible that pedestrians might not notice this nearly as often, due to being much less impacted by it. It's also a significantly worse problem during typical commute hours.

Due to the number of aggressively awful drivers in the city, I've ordered a dashcam for my bike, so I'll likely have some footage to demonstrate this soon. (Well, I hope not, but.)