How To Verify Counts - Image Sensing Systems RTMS G4 User Manual

G4 Software

How to Verify Counts

The verification of a good zone setup is an essential part of the setup. In it we compare RTMS
volume measurements over a period of time to a manual (visual) count for the same interval.
Use of a hand-held tally counter is recommended.
1. Start the WinRTMS software.
2. Select Manual Settings from the listed options.
3. Select Verify from the listed options.
4. Select which lanes you wish to verify by checking their adjacent boxes. Unchecked lanes
will remain unchanged.
5. Clear the checked RTMS data counters by clicking the Clear Selected button or by
clicking Clear All.
6. In the selected lanes, count vehicles as they cross the RTMS beam starting immediately
after hitting the Start button.
7. Several observers may be enlisted in the process, with each observer counting traffic in a
different lane. The RTMS Count for each selected lane (zone) will be updated as vehicles
pass.
8. Continue counting until each lane has a count of about 50 vehicles; this will usually take
several minutes. An Elapsed Time counter shows you the interval.
9. Click the STOP button when there is a gap in the traffic and immediately stop your
manual counting on all lanes.
10. Highlight a Manual Count box and enter the manual count for the zone in the
corresponding box.
11. The difference between the RTMS and the manual counts in absolute and percent
deviation terms is immediately displayed. Deviation of more than 5% requires zone setup
correction to improve detection accuracy. The verification process should then be repeated.
12. To save the accumulated results of verification in a text file, click Save to File. Use
normal Windows procedures to name and save the file using the Save As dialog box.
Similarly click View File to be shown verification results previously saved.
3-24 © 2009 ISS Canada
Chapter 3
G4 User Manual