Off-road axle detection sensor (ORADS) : research implementation plan.
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2001-04-01
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Edition:Research implementation plan.
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Abstract:To collect various types of traffic data to meet the Federal Requirements, field technicians have to enter
the roadway to anchor the road sensors while traffic is moving at highway speeds. On high volumes
routes this can be a very time consuming task, and cold wet pavements will not permit the use of existing
sensors that use tape to stick to the pavement. The requirements for the off road sensors are: collecting
3 or 4 lanes of data from the side of the road, needs to be in place for 48 hours, portable and set up
within one-half hour, set 60 to 75 locations per week, and low power consumption so that they can
operate on a small gel cell battery. The traffic data required are: FHWA thirteen (13) vehicle
classifications by axle type, speed by vehicle type, and total volume.
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