DO NOT run a red light in front of a cop in DC. I'm just putting that out there as kindly intended advice. If you go to DC thinking it's free reign, you're likely to be disagreeably surprised. Especially if you're in the parts of the city that I'd imagine most of the people on HN would be likely to be in.
And Heaven help you if, well, other agencies watching DC misinterpret your red light running. You may be in the wrong place at the wrong time and find yourself trying to explain that to people who, as a general rule, don't believe in coincidence.
Yeah. Just don't draw that kind of attention to yourself in DC. That leads nowhere good.
I wouldn't say there are big problems at all, it mostly works ok. I'm glad there are new options. But infrastructure alone isn't enough. Like the parent, I do think there are low-quality users who don't give a shit & act bad, in a way I'd never see from for example a bicycle user. How problematic is that? So far it's generally not so bad. But bad users, bad parkers, and full bike racks all take their toll. It seems unlikely a lot of these things will get better over time.