Max candlepower of those 'slow down' signs?
Discussion
Theres a slow-down '30' sign heading out of Bury, Manchester, as you turn down the road that heads for Radcliffe. Its just around the corner from Bury FC (Gigg Lane).
At night, its as bright as oncoming headlamps. I mean it truly is staggeringly bright, enough to reduce your forward vision. Its way brighter than anything I've ever seen on a roadside, in fact its so bright that at the distance it activates, you can't even read what it says. The signal alternates between a 30 symbol and a scamera signal.
Is there a maximum brightness allowed for roadside signage?
At night, its as bright as oncoming headlamps. I mean it truly is staggeringly bright, enough to reduce your forward vision. Its way brighter than anything I've ever seen on a roadside, in fact its so bright that at the distance it activates, you can't even read what it says. The signal alternates between a 30 symbol and a scamera signal.
Is there a maximum brightness allowed for roadside signage?
There were some on the A12 roadworks earlier in the year that were extremely bright as well. As a motorcycle commuter, often with rain / spray / general road grime on the visor at that time of year, it certainly didn't help visibility, and it was extremely distracting to have them suddenly switch on when only 10 metres in front of you when set off by other traffic. I would be interested to know!
Vaux said:
I'd report it t'council.
I know the motorway VMS signs have a "night and day" brightness setting.
I know the motorway VMS signs have a "night and day" brightness setting.
Indeed so. The actual timing of when they go from dim to bright is driven by a predefined table, based on the lighting-up times.
Some of the new LED-based signs are extremely bright, though, probably due to this.
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