There seems to be a move away from using temporary lights that communicate with each other via a long yellow cable to ones that communication via radio waves (I assume these are digital lights/controllers). Is it me or are these new ones a heap of crap? They seem to frequently fail and default all the lights to red thereby producing nothing but chaos and long queues of traffic. Yesterday on my 20 mile communte to work I had to get through 3 sets of temporary lights and all of them were stuck on red. Anyone else come across this?