Reply to post:

This is going to be the whole thing with driverless cars: Can't make the technology safe for normal road use, so adapt the roads and the users to fit the driverless cars. As soon as drivers, and their cars are assuming cyclists have beacons, there will be a lot more cyclists without beacons getting run down, not to mention the pedestrians. This may be ok in the U.S. where it's already illegal to walk across the road, but will mean huge changes in the U.K.