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PostPosted: Fri Aug 13, 2010 10:08 
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BBC Online wrote:

Call to switch off traffic lights at night in Devon

A Devon councillor says traffic lights should be turned off at night.

Percy Prowse, vice chairman of Exeter and the county's joint highways Committee (Hatoc), says they are unnecessary at quieter times.

He also says turning them off from 8pm to 6am would reduce the £100,000-a-year power cost.

A working party of councillors is due to report on the matter to Hatoc in November.

Former policeman Mr Prowse told BBC News: "I returned from Bournemouth airport last September and when I got to Middlemoor in Exeter at one thirty in the morning the lights changed to red, yet I was the only one there.

"Why should they be on? They should be turned off at eight o'clock and on again at six o'clock."

Transport for London is already considering scrapping 145 traffic lights and Bristol has experimented with turning off lights.

But an engineer's report to Devon County Council's Highways Committee in January said a 1989 experiment to turn a small number of traffic lights off at night led to more accidents.

It also said pedestrians using crossings linked to the lights could be in danger.

The county council already uses dimmer switches to cut power use at night.

I’m all for disabling unnecessary controls, but pedestrian crossings aren’t unnecessary.
Perhaps a reprogram of lights to stay ‘off’ until requested by a pedestrian, is a good compromise?

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PostPosted: Fri Aug 13, 2010 12:42 
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I don't see how you can just turn off the lights without some alternative signage which would need illuminating thus using the electricity saved on the lights. I like the American system of having a flashing yellow light at the junction which converts it to a "4-way stop" where pedestrians have priority as at a zebra crossing. But that also uses electricity. But I would be in favour of trying the system even if it didn't save electricity since it would save the fuel wasted by cars stopped for no reason.

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PostPosted: Fri Aug 13, 2010 14:08 
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Lights with sensors could turn themselves to flashing amber below a set level of traffic and switch back to normal operation if they sense a queue on one leg for more than a set time.

Well set up sensor sensor lights that default to leaving the main route green until they detect an approaching vehicle on a 'red' leg would also work. There is a set close to my home that seem to do this which work very well.

Putting a sensor a couple of hundred metres away from the lights so they only switched on when they picked up a vehicle might also work, depends if the effort/cost of doing it was offset by the power saving.

Caveats about pedestrian usage apply of course, as would the need for a driver awareness program.

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PostPosted: Fri Aug 13, 2010 18:46 
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Far too many lights are on roundabouts, now and these could be turned off at night (or full time in my opinion).

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My views do not represent Safespeed but those of a driver who has driven for 39 yrs, in all conditions, at all times of the day & night on every type of road and covered well over a million miles, so knows a bit about what makes for safety on the road,what is really dangerous and needs to be observed when driving and quite frankly, the speedo is way down on my list of things to observe to negotiate Britain's roads safely, but I don't expect some fool who sits behind a desk all day to appreciate that.


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