Traffic signals updated
The Macomb Daily
Dec. 27, 2011. 03:20 PM EST
Macomb County Dept. of Roads traffic engineer Adam Merchant describes the use of LEDs in traffic ... More »
Macomb County Dept. of Roads traffic engineer Adam Merchant describes the use of LEDs in traffic signals. « Less
traffic, signal, merchant, ramsey, news_playlist, Local News, News
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