Guardrails 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 metal 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 shown below.

This is a picture of the software.