Re: Traffic light bell

Peter Moylan wrote:
On 23/11/07 16:43, Skitt wrote:
Father Ignatius wrote:


I recall no distinction in sound between changing to red and changing to blue, and took the sound to be simply an attention-getter.


There was no difference in sound, and there was no blue. Just red
and green panels with GO and STOP written vertically. They sort of
rotated around a vertical axis, in a stepwise fashion.

Some of the early traffic "lights" in Melbourne were like clock faces,
with a single hand travelling through the green, amber, and red
sections. This allowed you to work out how long you still had to wait.

Today's Australian pedestrian crossings make a slow "tick, tick" sound
after you've pushed the request button. Once you're allowed to cross, the
sound changes to a frantic rattle.

In Washington, DC, there's a clock that counts down the seconds to the
changes of walk/don't walk on every pole with the w/dw sign.

--Jeff

--
"Power never concedes anything without a
demand. It never has and it never will."
--Frederick Douglass
.

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