Portland Orange
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Portland Orange is the color of light emitted by the <templatestyles src="smallcaps/styles.css"/>dont walk phase of pedestrian crossing signals in the United States and Canada. The color was chosen to avoid confusion with regular traffic lights in conditions of poor visibility.[1]
Its chromaticity is specified by the Institute of Transportation Engineers in that body's technical standards,[2] along with lunar white for the <templatestyles src="smallcaps/styles.css"/>walk lights.[3][4] Its application is stipulated in the U.S. federal Manual on Uniform Traffic Control Devices.[5] Various jurisdictional standards also require Portland Orange for <templatestyles src="smallcaps/styles.css"/>dont walk signs.[6]
The color can be created with some LEDs,[7][8] and the ITE specifies the precision of its wavelength to 3 nanometers.[2] In practice, the most brilliant color of gaseous tubing is similar to Portland Orange.[9]
International application
Portland Orange is generally not used outside the United States and Canada. In most of the world, red, or another specified color, is used for the <templatestyles src="smallcaps/styles.css"/>dont walk symbol instead of Portland Orange.[4]
References
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