How To Perform Manual Calibration - Image Sensing Systems RTMS G4 User Manual

G4 Software

How to Perform Manual Calibration

Manual Speed Calibration is intended for very low-volume traffic (For example: traffic volume
of less than 5 vehicles per minute).
To adjust the speeds after Automatic Speed Calibration, DO
NOT Load Defaults.
Note
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•
If Not:
•
•
1. Start the WinRTMS software.
2. Select Speed Calibration from the listed options.
3. Use Up/Down, Left/Right arrow keys to select a zone and adjust up or down in 2 MPH or
Km/h increments; as an example, if speed readings are 10 MPH too low, increase that
lane's speed by 10. The new coefficients take effect immediately.
3-30
ONLY Increase or decrease zone speeds as necessary
It is always best to use Auto Speed Calibration first.
You can Load Default parameters and then observe the
actual reported average speed per lane.
Compare the displayed speed measurement to your
estimated average speed in each lane.
© 2009 ISS Canada
Chapter 3
G4 User Manual