In April 2004, the California Energy Commission (Energy Commission) conducted a Light Emitting Diode (LED) Traffic Signal Survey to determine the current penetration of LED traffic signal modules in California. A traffic signal module is the individual 8-inch (200 mm) or 12-inch (300 mm) round traffic signal or the pedestrian signal. A module consists of the light source, lens, and all parts necessary for operation. Modules come in red, amber, and green colors for the round indications, and white/Portland orange for the pedestrian signals. In addition to determining the penetration of LED traffic signal modules, the Energy Commission wanted to know: (1) the respondents level of awareness regarding Californias new traffic signal standard, (2) the bid specifications used for their LED modules, (3) where they purchased their traffic signal modules, (4) their experience with LEDs, and (5) any reasons for not converting their traffic signals to LEDs. A total of 537 surveys were sent to the cities and counties in California and to the California Department of Transportation (CalTrans). One survey was sent to each jurisdictions Director of Public Works, Engineer and/or Maintenance Department. Surveys were sent and returned via electronic mail or fax.


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    Title :

    Light Emitting Diode (LED) Traffic Signal Survey Results


    Publication date :

    2005


    Size :

    37 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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