Chapter 4: Operations and Adjustments
RTMS Echo User Guide ©2019 Image Sensing Systems Inc. 4-13
Condition D: Under
Count in Several
Zones
In the situation shown in Figure 4-6, the count for many zones is below what is
expected; vehicles are being missed.
Figure 4-6: Under Count: Many Zones
In the above situation the signal strength reflection may be too low. This could
be caused by the aiming angle is not perpendicular to the traffic.
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