| Hardware Support - Recommended Tube Lengths and Setup |
Select the layout that you would like to view:
Layout: L14
Layout Type: Traditional Road Tube
Sensors Used: 4 Road Tubes
Spacing: Two Feet
Count Formats: Basic, Volume
Data Provided: Volume, Gap
Channels: 4 Channels, A, B-A, C-B,
D-C
Layout Type: Traditional Road Tube
Sensors Used: 4 Road Tubes
Spacing: Two Feet
Count Formats: Basic, Volume
Data Provided: Volume, Gap
Channels: 4 Channels, A, B-A, C-B,
D-C
This layout is mainly used for recording traffic volumes on four lanes of traffic, where data must be recorded for each individual lane. The A tube is
installed only over the first lane, the B tube is installed over the first and second lanes, the C tube is installed over the first three lanes and the D tube is
installed over all four lanes.
Vehicles in the inner lane hit all four tubes, but their hits on the B, C & D tubes are not counted since they were immediately preceded by a hit on the A,
B and C tubes. Vehicles in the second lane hit the B, C & D tubes, but their hits on the C & D tubes are not counted since they were immediately
preceded by a hit on the B & C tubes. Vehicles in the third lane hit the C & D tubes, but their hits on the D tube are not counted since they were
immediately preceded by a hit on the C tube. Vehicles in the fourth lane hit only the D tube. Note that the traffic flow of the outer lane can be either the
same direction as the inner three lanes or the opposite direction.
With this layout, you sacrifice some accuracy for the convenience of only having to use one TRAX to record four lanes of data. For greater accuracy,
use a RoadRAMP to isolate the lanes.
installed only over the first lane, the B tube is installed over the first and second lanes, the C tube is installed over the first three lanes and the D tube is
installed over all four lanes.
Vehicles in the inner lane hit all four tubes, but their hits on the B, C & D tubes are not counted since they were immediately preceded by a hit on the A,
B and C tubes. Vehicles in the second lane hit the B, C & D tubes, but their hits on the C & D tubes are not counted since they were immediately
preceded by a hit on the B & C tubes. Vehicles in the third lane hit the C & D tubes, but their hits on the D tube are not counted since they were
immediately preceded by a hit on the C tube. Vehicles in the fourth lane hit only the D tube. Note that the traffic flow of the outer lane can be either the
same direction as the inner three lanes or the opposite direction.
With this layout, you sacrifice some accuracy for the convenience of only having to use one TRAX to record four lanes of data. For greater accuracy,
use a RoadRAMP to isolate the lanes.
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