User's Guide

Chapter 4: Operations and Adjustments
RTMS Echo User Guide ©2019 Image Sensing Systems Inc. 4-26
Headway Average Query
This query returns the average of headways over a statistical interval.
Headway is the difference between the time when the front of a vehicle arrives
at a point on the highway and the time the front of the next vehicle arrives at
the same point (in seconds).
1. Click the Reporting tab.
2. From the drop-down to the right of Query, select Headway, average.
3. Click Save as file name and enter a name for the file.
The name can be any number of alphanumeric, dash (-), underscore (_) or
space characters. The default is average-headway.
4. Click the icon to the right of the date/time field.