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TC-800 | TC-1100 Radar Speed Sign Installation Manual MN0035 v23.02
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The sign should be positioned perpendicular to the road with the radar pointing directly at the curb, not at the
center of the road, for maximum vehicle detection. Signs rotated toward the center of the road will not perform
as well.
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SOLAR MODELS
| Do not install a solar powered radar speed sign under a tree. Summer leaves on the tree
could impact solar recharging. Make sure the solar panel is installed facing as close to South as possible at a
45° angle.
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The radar speed sign should be installed on the same side of the street as oncoming traffic. If installed on the
wrong side of the road, the angle of the sign could result in poor detection of the on-coming traffic, and also
result in the sign displaying speeds of vehicles travelling in the opposite direction.
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The radar speed sign should be installed 7-10 feet off the ground. Do not install the radar speed sign lower than
4 feet off the ground. Doing so will result in much of the radar speed signal being absorbed by the road, reducing
your detection range.
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Prior to the radar speed sign installation, look for any obstructions (telephone poles, large tree limbs, other
signage, etc.) that might interfere with proper operation of the sign.
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Installing the sign on the same side of the street as parallel parking of vehicles could affect the radar performance
of the radar speed sign. The radar speed sign should be installed high enough off the ground to detect oncoming
traffic over the parked vehicles.
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If the radar speed sign is installed more than 12 feet above the roadway the sign should not be tilted more than
3°- 4° downward to detect vehicles. Doing so will result in a greatly reduced length of time vehicles will be
detected, and will display speeds that are LOWER than actual speed (the cosine effect).
