Traffic Technology International have published another chapter from my new book, Traffic Signals, find it on Amazon https://t.co/i6YnYYJNoI directly from Twitter

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via Twitter https://twitter.com/AlistairGollop

April 25, 2016 at 11:00PM

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Traffic Technology International have published another chapter from my new book, Traffic Signals, find it on Amazon https://t.co/i6YnYYJNoI directly from Twitter