Set-Back Height Diagrams; Zero Setback Options - Image Sensing Systems RTMS G4 User Manual

Chapter 2

Set-Back Height Diagrams

Total width is the distance from edge of the first lane to the outside edge of the last lane.
Divide this number by the average lane width. For most applications, 12 feet is considered a
typical lane width. Example: total detection area = 120 feet; lane = 12 feet; 120/12 = 10
equivalent lanes.
Increase the setback as much as possible if room is available. Then obtain the proper mounting
height based upon actual set-back distance.

Zero Setback Options

Current generation hardware/software has new features that enable the RTMS sensor to work
with zero setback. For example: zero setback might be required for installation on a bridge.
However, appropriate setback distance should always be used when setback is available.
•
The zero setback feature has a maximum range of ~50 feet or 4 lanes of traffic.
•
Recommended mounting height is 14 feet.
G4 User Manual
Figure 2.2. Set-Back Distance Chart
Figure 2.3. Mounting Height Chart.
RTMS G4 Installation
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