SmarTek Systems SAS-1 Intro and Background - Manual (Page 6)

SmarTek Systems (www.smarteksys.com) 6
Installation Geometry
The SAS-1 can monitor up to five (5) lanes. A side mount installation geometry for monitoring
3 lanes and 2 shoulders is shown in Figure 4.
The number of detection zones or lanes is
driven by constraints for typical side mount
geometries (resolution and occlusion of the
far lanes). The ability of SAS-1 to separate
or resolve lanes far from the sensor is highly
dependent on the installation geometry.
When the SAS-1 is installed according to
SmarTek Systems recommendations, vehicle
detection performance is excellent for all
lanes monitored. If SAS-1 is installed at a
height lower than recommended or further
from the active lanes than recommended,
vehicle detection performance for the lanes
furthest from the sensor will be degraded.
There is no loss of detection performance due
to variation in weather, environmental
conditions, or visibility conditions.
RS L1 L2 L3 LS
h
x
SAS-1
Direction of Travel
Detection Zones
Figure 4 Side Mounting for Multilane Monitoring