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Ramp Metering Status in North America
Covers traffic signals on freeway entrance ramps that supply traffic to the freeway in a measured or regulated amount.
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| Format | Adobe Acrobat PDF [Download Acrobat Reader] |
| Size | 1 Mb |
| Type | PDF Document |
| Date | 06/01/95 |
| Creator | US Department of Transportation |
| Subject Topic Area(s) | , |