Looking at the diagram [0], I'm dubious if this is a good "authoritative" solution. The problem with left turns is collision with oncoming traffic moving straig

Looking at the diagram [0], I'm dubious if this is a good "authoritative" solution. The problem with left turns is collision with oncoming traffic moving straight through. Especially at yellow lights where the turning vehicle is trying to make it out of the intersection before the light turns red and they feel like they are blocking 90-degree traffic [1], and end up colliding with oncoming vehicles running the yellow. This design seems to shift that problem 100 meters down the road, but the challenge of crossing oncoming traffic remains (I guess without the pressure of trying to get out of a turning Yellow Light situation). So it's definitely an improvement, but isn't there a simpler one called "Dedicated Left Turn Signals"? If both directions had an "advance left" light where both could turn safely, and there was a dedicated light for turning (i.e. no entering the intersection to turn except in a dedicated Left turn sign), this solves the problem, no? Dedicated Turn lanes and signals need space, so they're not always possible in dense urban environments, but the Michigan setup doesn't suffer from a lack of space. So i feel like the Michigan solution is useless for San Francisco, and also not as good as the alternative for Michigan [0] https://en.wikipedia.org/wiki/Michigan_left#/media/File:Michigan_Left.svg https://en.wikipedia.org/wiki/Michigan_left#/media/File:Mich... [1] Which, incidentally, FEELS unsafe, and inexperienced drivers panic trying to get out as soon as possible, but isn't actually - these vehicles are starting from 0 and accelerating - they are unlikely to accelerate INTO you. In rushing to get out before the light turns red, they are more likely to collide with an oncoming vehicle trying to run the yellow.