LTR vs RTL
The TCR traffic counters distinguish between 2 directions.
RTL = objects which come from the right and disappear to the left. The left LED
will pulse once in this case.
LTR = objects which come from the left and disappear to the right. The right
LED will pulse once in this case.
Measure distance to lanes
In order for the device to determine the velocities, the distance to the object must
be known. The distance can be determined with a tape measure or a laser distance
meter. Measurements are taken from the middle of a track to the front of the device.
RTLDist = Distance in cm to the RTL movement line.
LTRDist = Distance in cm to the LTR movement line.
