Traffic Counter Road Tube Layouts

This road tube layout is mainly used for recording traffic volumes on two lanes of traffic, where data must be recorded for each individual lane. The A tube is installed only over the first lane, while the B tube is installed over both lanes.

Vehicles in the inner lane hit both tubes, but their hits on the B tube are not counted since they were immediately preceded by a hit on the A tube.  Vehicles in the outer lane hit only the B tube. Note that the traffic flow of the outer lane can be either the same direction as the inner lane or the opposite direction.

With this layout, you sacrifice some accuracy for the convenience of only having to use one TRAX to record two lanes of data. For greater accuracy, record each lane separately using an L4 layout, if the road location allows a TRAX to be installed on each side of the road.

This layout is mainly used for recording traffic volumes on two lanes of traffic, where data must be recorded for each individual lane.

Vehicles in the inner lane hit the A tube followed by the B tube, but their hits on the B tube are not counted since they were immediately preceded by a hit on the A tube. Vehicles in the outer lane hit the B tube followed by the A tube, but their hits on the A tube are not counted since they were immediately preceded by a hit on the B tube.

With this layout, you sacrifice some accuracy for the convenience of only having to use one TRAX to record two lanes of data. For greater accuracy, record each lane separately using an L4 layout, if the road location allows a TRAX to be installed on each side of the road.

This layout is one of the most commonly used when data for speed or classification is needed. It is designed for typical two-lane roads with bi-directional traffic.

Vehicles in the inside lane hit the A tune first, then the B tube and are recorded as Direction 1. Vehicles in the outside lane hit the B tube first, then the A tube and are recorded as Direction 2.

With this layout, you sacrifice some accuracy for the convenience of only having to use one TRAX to record two lanes of data. For greater accuracy, record each lane separately using an L5 layout, if the road location allows a TRAX to be installed on each side of the road.

This road tube layout is mainly used for recording traffic volumes and is essentially the same as the L1 layout, but with the addition of two more tubes for two additional lanes.

Separate volumes are recorded on the A, B, C, and D tubes, which makes this layout ideal for situations where a RoadRAMP is being used to isolate multiple lanes.

This layout is mainly used for recording traffic volumes and is essentially the same as the L2 layout, but with the addition of two more tubes for two additional lanes.

This layout is ideal for recording traffic volume on four-lane divided highways where the TRAX can be installed in the median.

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, record each lane separately using an L4 layout, or each pair of lanes separately using an L2.

This layout is mainly used for recording traffic volumes and is essentially the same as the L2 layout, but with the addition of two more tubes for two additional lanes.

This layout is ideal for recording traffic volume on four-lane divided highways where the TRAX can be installed in the median.

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, record each lane separately using an L4 layout, or each pair of lanes separately using an L2.

This road tube layout is used when data for speed or classification is needed and is essentially the same as the L5 layout, but with the addition of two more tubes for additional lanes.

This layout is ideal for recording class or speed data on divided highways, where the TRAX can be installed in the median.

This layout is used when speed or class data is needed for each lane on two lanes of traffic going in the same direction. Sometimes referred to as a short tube-long tube setup, it consists of two ‘short’ tubes (A & C) that are installed over the first lane and two ‘long’ tubes (B and D) that are installed over both lanes.

Vehicles in the inner lane hit all four tubes, but their hits on the B and D tubes are not counted since they were immediately preceded by hits on the A and C tubes. Vehicles in the outer lane hit only the B and D tubes.

This layout is used when speed or class data is needed for each lane on two lanes of traffic. It is essentially the same as the L11 layout, but for bi-directional traffic. Sometimes referred to as a short tube-long tube setup, it consists of two ‘short’ tubes (A & C) that are installed over the first lane and two ‘long’ tubes (B and D) that are installed over both lanes.

Vehicles in the inner lane hit all four tubes, but their hits on the B and D tubes are not counted since they were immediately preceded by hits on the A and C tubes. Vehicles in the outer lane hit only the D and B tubes.

With this road tube layout, you sacrifice some accuracy for the convenience of only having to use one TRAX to record two lanes of data. For greater accuracy, record each lane separately using an L5 layout, if the road location allows a TRAX to be installed on each side of the road.

This layout is mainly used for recording traffic volumes on three lanes of traffic, where data must be recorded for each individual lane. The A tube is installed only over the first lane, while the B tube is installed over the first and second lanes and the C tube is installed over all three lanes.

Vehicles in the inner lane hit all three tubes, but their hits on the B & C tubes are not counted since they were immediately preceded by a hit on the A & B tubes. Vehicles in the second lane hit the B and C  tubes, but their hits on the C tube are not counted since they were immediately preceded by a hit on the B tube. Vehicles in the third lane hit only the C tube. Note that the traffic flow of the outer lane can be either the same direction as the inner two lanes or the opposite direction.

With this layout, you sacrifice some accuracy for the convenience of only having to use one TRAX to record three lanes of data. For greater accuracy, use a RoadRAMP to isolate the lanes.

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.