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unixronin: Galen the technomage, from Babylon 5: Crusade (Default)
Unixronin

December 2012

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Thursday, April 22nd, 2010 07:52 pm (UTC)
In Europe we use traffic lights for alternate traffic flow mostly. These days they mostly have a motion/object sensor to determine whether there is anyone waiting.

Flaggers are really there for very very short duration events such as letting a truck in/out or perhaps something like fixing a streetlight which takes a few minutes and just requires traffic to maneuver around a parked vehicle.
Thursday, April 22nd, 2010 07:58 pm (UTC)
Traffic-sensing signals are still extremely rare in the US. They cost more. :p
Thursday, April 22nd, 2010 08:49 pm (UTC)
And they don't recognize bicycles . . .
Friday, April 23rd, 2010 05:58 am (UTC)
or motorcycles, usually.