Never been a fan of the "we shouldn't make the smaller, easier improvements because we need to do the bigger, harder things instead" argument...

Yes, we need more and better public transit, but that is going to take a whole lot of time, money, and effort to work towards. Yes, it's worthwhile, and we shouldn't STOP working towards it because of this, but I don't think that's a reason to balk at a smaller, easier incremental change that encourages safer driving while also simply being more efficient.

For public transportation in the US you need medium density living. So you're talking about getting everyone on board and uprooting everyone as you upgrade cities or build new cities for that.

"Anything except making incremental improvements that are practical instead of doing nothing because the preferred goal is impossible, at least practically impossible" - not as catchy, I admit :P

Do you want traffic lights to only turn every 5-10 minutes? Lights were always going to be changing more than transit was arriving, if altering how it changes slows speeding drivers why wouldn’t you want that?