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Old 11-16-2010, 02:59 PM
 
721 posts, read 1,470,323 times
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So sometimes when I am out running I see two rubber strips across the road and then there is a type of box attached to a utility pole with a chain. What is this? Does anyone know? I didn't have my phone this morning but I could take a picture. Just curious.
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Old 11-16-2010, 03:02 PM
 
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Measuring traffic volume maybe?
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Old 11-16-2010, 03:33 PM
 
Location: under the beautiful Carolina blue
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Originally Posted by Dmdpt View Post
Measuring traffic volume maybe?
Yup. Might be looking to see if a traffic control device is needed, or if there is one already existing, see if a turn arrow is needed, etc.
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Old 11-16-2010, 03:41 PM
 
Location: Mastic Beach
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one rubber strip means they are checking traffic flow...two means speed measurements usually.
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Old 11-17-2010, 07:15 AM
 
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Originally Posted by minesbroken View Post
one rubber strip means they are checking traffic flow...two means speed measurements usually.
Disagree. Not possible to measure speed with two rubber strips - this does not account for the differences in lengths between axles on different vehicles.
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Old 11-17-2010, 09:48 AM
 
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hmm interesting. there are actually two boxes and two sets of rubber strips per box. boxes are set up approx a block apart.
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