Select the movement direction of the vehicles to detect their speed – toward or away from the speed-trap.
To select the vehicle movement direction, do the following:
Fig. 7.3—7 Selecting the vehicle movement direction relative to the speed-trap
Select Oncoming to make the speed-trap detect the speed of the oncoming traffic.
Select Passing to make the speed-trap detect the speed of passing traffic.
Select Automatically to make the speed-trap automatically select the movement direction.
The vehicle movement direction is now selected.