A little context: the route I usually use to get to work, Valencia St, has bike lanes. It's also full of cars parking in the bike lanes; reliably 3 or 4 on an average ride down the street.
I am pretty good at navigating traffic on a bike. I haven't been hit by a car because someone parked in the bike lane. It probably raises my relative risk of getting hit. Not by a ton. It probably raises some other people's relative risk by a ton.
Some things I have tried when I see people parked in bike lanes:
1. ignoring it
2. just ringing my bike bell a bunch
3. yelling at them "don't park in the bike lanes!" as I ride past
4. taking a photo and reporting it to SF 311
5. stopping in front of them until they come out of the store and then confronting them. (this I save for particularly egregious offenders and/or luxury cars.)
6. sending notes to my local representatives/etc asking for more protected bike lanes (with like a barrier so cars physically can't park there)
7. waiting in front of the car until a parking cop comes by and waving at them to give them a ticket
(Some of them are a bit harsh, so I balance it based on the situation: if it's a harried uber eats driver making $4/hr, I don't take out my frustration on them. I try to save the angrier ones for the people who are Plain Old Bein' an Entitled Ass.)
Some things I have thought about doing:
8. printing out bumper stickers that say "I parked in a bike lane"
9. calmly lecturing them that, by getting their coffee twelve seconds faster, they are increasing my risk of actually dying
10. same as 9, but instead of lecture, I actually really try to connect with them and understand their needs
Effects on the driver:
1 (ignore) does nothing, of course.
2 (bell) does nothing too, although maybe it lowers the chance of dooring me.
3 (yell) maybe makes them feel bad, maybe makes them feel like "bikers are jerks."
4 (report) does almost nothing. It means it gets included in SF's bike lane stats, but they explicitly say they will not give a ticket for this.
5 (confront) seems the only one that actually does anything - I tell them off, they go "eh ok whatever" and drive off. Maybe their day is a little less pleasant. It also takes the most of my time and raises my blood pressure.
6 (legislate) maaaybe causes change, slowly slowly slowly. also, it's hard to say "we should focus more on this" when there are homeless people dying in the streets and apartments cost $3000/month.
7 (wait for cop) does nothing; I had a cop literally drive past me and a car-parked-in-bike-lane today.
8 (bumper sticker) would piss them off and maybe give them consequences not to park in bike lanes! it feels somewhat disproportionate. I'm fine with that; traffic tickets are also disproportionate to account for the fact that we usually won't catch you. but knowing my luck and current laws though, I'd probably end up getting a ticket for vandalism.
9 (lecture) won't do anything. they'll say "yeah ok" and then park in the bike lane again.
10 (connect) ... also won't do anything. it's hella hard to connect with a rando on the street. Especially for the kind of length of talk that will lead to connection and actually changing their mind.
So, I mean, nothing is effective! Also, some of these raise my blood pressure and/or waste my time. Also also, maybe I occasionally road-rage at the wrong person, which makes the world worse - there's nonzero fallout here.
Which leads to the difficult question: when you are powerless to a small injustice except to ignore it... is ignoring it the best/wisest/Zennest thing to do?
(this doesn't map nicely onto other stories about injustices that we know about, because it's pretty minor. feels like, I dunno, 2 micromorts/year? - which will lead to nonzero deaths in a city of a million people and therefore should be fixed, but for me personally I could just ignore it.)
(ok, I've left out choice 11. walk into the coffeeshop that they're parked outside of, and say "does anyone have a Black Porsche outside? it's being towed right now" and then wait for them to come out for it and then go "April fool, move your car, you goon." this one I haven't tried yet; just waiting for the opportunity :D