A two-lane road with a central median requires
two RoadPod’s to properly monitor both lanes.
!
NOTE:
Do not use this configuration for
multi-lane unidirectional sites!
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Multi-lane unidirectional sites
For multilane carriageways with unidirectional
traffic, it is mandatory to use one RoadPod VT
per lane.
If the sensors of a single unit are placed across
two or more lanes with traffic travelling in the
same direction, the resultant axle events of
multiple vehicles travelling in echelon may be
indistinguishable from a heavy vehicle.
For roads with no median access or greater
than two lanes, consider using a
Count Sensor
Layout
to obtain basic volumetric and gap data.
The following section discusses the installation
of a RoadPod unit using a
Classifier Sensor
Layout
. The techniques mentioned here can be
carried over to
Count Sensor La
yout installation.
Sensor installation
2. Twist the Figure-8 Cleat to form a second
loop and slide over the end of the tube.
3. Bunch the two loops together and pull the
tube through as necessary.
1. Place one end of the pneumatic tube over
the large loop of a Figure-8 Cleat.
To attach a Figure-8 Cleat
MetroCount
Traffic Data Specialists
®
Page 5