ah but they can because they're in a nice big cars, people have shunts and scrapes and worse all the time and no-one gets hurt
anyone that gets themselves on the inside of a long vehicle turning left ...
cycle routes and cycle lanes and now this reinforce the idea that bikes do not belong on the road or aren't capable, i have one of these two stage lights on my route home and it's ridiculous to wait there like a second class vehicle, until all the important vehicles have gone, and then trundle across while everyone waits and watches
all it needs is a man walking in front waving a flag