Hazel Grove Forum

A Suburb in Stockport

10 10 / 10 from 9 Reviews

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Jenny posted..

[QUOTE=TwistedBanana]Coming home from work the other day (I work in Heaton Mersey) i hit the usual jam that starts near the hospital entrance on the A6 and carries on to High Lane nowadays. Anyway I got to the lights at Asda which went red, no one was waiting to exit Asda and no one was using it as a pedestrian crossing. I suppose someone could have pressed the crossing button and walked off but there didn't seem to be anyone about. Surely these lights only change when triggered by someone leaving Asda or someone pressing the button. i would hate to think they are sequenced in anyway, that would show gross incompetence from our planners[/QUOTE]

Sorry for seemingly having a response for everything :P

Traffic lights either run on fixed timings, or are responsive to demand (via loops in the road) or a mix of both. Sadly, the traffic engineers of Greater Manchester have decided that they love fixed timings, which is why it's common to find yourself sat at red lights for no obvious reason up in this part of the country. The fact that we have a loop at the Commercial Road junction is actually novel around here!

Elsewhere in the country, it's more common to find traffic light hooked up to complicated computer systems which make thousands of decisions every second to work out when is the best time to change, etc. (Obviously I've simplified that a bit)