Questions tagged [nevada]

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4
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What was the technology in pre-war traffic recorders?

In 1936, Nevada was using an automated traffic recorder, a device that counts the number of passing vehicles: The device must have included a vehicle detector and a recording mechanism. Today it ...
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1answer
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When were public roads cleaned electromagnetically?

In the first half of the 20th century, tires were more often punctured, so metal waste on the roadway was a bigger problem. The book "Lorries, Trucks and Vans 1897-1927" features an electromagnetic ...