Sensors and Systems
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December 31st, 2010
Treating Traffic

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Dubbed the ‘Smiley SID’, this portable sign detects a vehicle’s speed then displays it so the driver can see. Travelling under the speed limit produces a ‘smile’; exceeding the speed limit a ‘frown’. The detector has a range of up to 120m, a battery life of three to six days and can operate in extreme temperatures. Read More