There's quite a few like that in Liverpool. I got so mad over one particular set that used to delay my journey home by several minutes, in the days when i worked nights and commuted by bike, that i rang the council with steam coming out of my ears.
Felt a bit deflated when i got through to a highways engineer who was also a biker who said 'no problem, mate, it's just a matter of adjusting the sensitivity and we'll get on to it, thanks for telling us'.
I mean, someone on the council who's actually helpful!! Shouldn't be allowed!