Image:Ramp Meter.JPG

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[edit] Summary

This is a ramp meter on the westbound Sylvan entrance to US-26 in Portland, Oregon. The signal is shown here during off hours. When it is active, the black box illuminates a 'STOP HERE ON RED' message with a diagonal down arrow pointing to the stop bar painted on the pavement. There is another meter opposite this one for a total of two lanes. They activate alternately of each other, allowing one car to proceed per lane at a time.

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I, the creator of this work, hereby grant the permission to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. Subject to disclaimers.

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