Frankly, drivers out here don’t care about a painted symbol on the ground and hell will freeze over before they slow down to 10-15 mph because a bike is on the road. No amount of education, unfortunately, will change people’s behavior in this. They already know, more or less, they just don’t care about anyone but themselves and how much of a burden it is for them to slow down for some “stupid bike”.

So because of that, you will always have cars squeezing past you going 30+ mph.

Roads need an actual lane for bikes to be effective, otherwise you accomplish nothing. Remove parking on one side of the street to squeeze in a bike lane. It will make those home owners angry, but that’s your only option if you want bike lanes. Otherwise you’ll have to pay to have police officers on the routes every single day issuing a mountain of tickets. You couldn’t do that for a week or two then stop, because the second you do stop enforcing it everyone will go right back to the way it was.