Pre-Installation Considerations: RTMS Echo Sensor

Guard rails and Barriers

In almost all cases, median guard rails or barriers do not interfere with traffic detection. In the few cases in which such interference may occur, e.g., large metal barrier, very tall barriers, or movable mental fences, a good solution is to use a second sensor on the other side of the road. Each of the sensors can monitor lanes on its side of the barrier, requiring a smaller setback to cover fewer lanes, as show below.

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