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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?


To: TimF who wrote (131960)2/8/2001 10:35:20 AM
From: Scumbria  Read Replies (1) | Respond to of 1570353
 
Tim,

Most of the problems associated with timing traffic lights are associated with left turns across traffic.

In order to make a timed grid in which you can move through at a fixed speed without stopping, left turns across traffic have to be eliminated.

In addition, irregular spacing of roads along the grid makes it impossible to time traffic lights, if the traffic is moving in both directions on the same street.

Elmer on the Intel thread did some measurements in San Jose, and found that he was stopped by something like 22 out of 24 lights on the San Thomas "Expressway" (during off hours, no less.)

I found that a typical Silicon Valley drive takes about 3X as long as it would if the lights were all green.

Fixing the movement of traffic on city streets would greatly reduce gas consumption, and simultaneously improve the quality of life for the people living there.

Scumbria



To: TimF who wrote (131960)2/9/2001 3:46:42 PM
From: tejek  Respond to of 1570353
 
If you have two parralel 2 way streets going between A and B and you change them to have one 1 way street in each direction you might possibly get a little more efficancy but I can't see how it would result in huge savings. Could you explain it?

Tim,

A little savings but multiplied by hundreds of thousands of streets in thousands of American cities and towns.

ted