For a couple of years now, the corridor between Holland and Parkdale on Wellington West has been painted with experimental markings. Those are intended to reduce the number of "doorings" we've had through that stretch. "Doorings" is how cyclists refer to those events when a car door suddenly opens into a bike's path - it can result in very serious injury. I can't assert that the trial has elminated them, though we've gone from five reported serious doorings in the summer of 2014 to none since the markings went in.