We have a full trial in use in London, installed in record time & by and large reliable. Some problems so far: loss of the 24v supply for any reason results in a loss of all detection. If any posts are knocked down, then as the ‘chain’ is lost then there is no part restore, so all out until the post is replaced. My honest opinion is that it is a good concept but it is overly complex. The user interface is useful and informative. I would prefer to see the intelligence distributed by arm, so that the signals are controlled by units in local distribution pillars, the current system uses drivers in each signal head which is just (in my opinion) moving more of the electronics away from the controller but not simplifying at all. Bear in mind that each post will still require a 12c cable as well as the cat5 so any benefit is marginal.