Quizzes & Puzzles3 mins ago
What are the knobs under pedestrian crossings for?
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On the new style pedestrian crossings (I think they're called Toucan crossings) there is a small black knob on the underside of the "press button & wait" box. This knob rotates but seems to have some friction/momentum about it. It just keeps turning (Once you know it's there you just have to!).
Any info on what it's for would be appreciated!
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If I hadn't been fiddling with it before the lights changed I would have noticed that it starts turning when green man shows. My apologies to Mortartube for not believing.
Here's a nice site that explains it and also explains the difference between Zebra, Pelican, Puffin & Toucan crossings: http://www.travelwise.org.uk/safe/tech_pedestrian.shtml
:-)
Not just for Deaf blind people.
Imagine the situatio of crossing a dual carridgeway with separately controlled crossing on each side. A blind person in the middle hears the beeping but doesn't know which side it's for.
Apparently some crossings like these are ONLY being fitted with knobs - no beeps at all.
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