Appendix D - traffic impact assessment

                                                            Traffic Analysis and Reporting System                                                                        TARS
                                                    Report Notes for AADT Segment Report
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AADT Segment Annual Volume Report                                            Site
Provides summary data for the selected AADT Segment of a                     The physical location of a traffic counting device. Sites are
Road Section. Summary data is presented as both                              located at a specified Through Distance along a Road Section.
directional information and a combined bi-directional figure.
The data is then broken down by Traffic Class, when                          Site Description
available. The report also includes maps displaying the                      The description of the physical location of the traffic counting device.
location of both the AADT Segment and the traffic count site.
                                                                             Start and End Point
Annual Average Daily Traffic (AADT)                                          The unique identifier for the Through Distance along a Road Section.
Annual Average Daily Traffic (AADT) is the number of vehicles passing
a point on a road in a 24 hour period, averaged over a calendar year.        Vehicle Class
                                                                             Traffic is categorised as per the Austroads Vehicle Classification
AADT Segments                                                                scheme. Traffic classes are in the following hierarchical format:
The State declared road network is broken into Road Sections                      Volume or All Vehicles
and then further broken down into AADT Segments. An AADT                          00 = 0A + 0B
Segment is a sub-section of the declared road network where
traffic volume is similar along the entire AADT Segment.                          Light Vehicles
                                                                                  0A = 1A
                                                                                  1A = 2A + 2B
AADT Values
AADT values are displayed by direction of travel as:                              Heavy Vehicles
                                                                                  0B     = 1B + 1C + 1D
   G   Traffic flow in gazettal direction                                         1B     = 2C + 2D + 2E
   A   Traffic flow against gazettal direction                                    1C     = 2F + 2G + 2H + 2I
   B   Traffic flow in both directions                                            1D     = 2J + 2K + 2L

Data Collection Year                                                         The following classes are the categories
Is the most recent year that data was                                        for which data can be captured:
collected at the data collection site.                                            Volume
   Please Note:                                                                   00 All vehicles
   Due to location and/or departmental policy,
                                                                                  2-Bin
       some sites are not counted every year.                                     0A Light vehicles
                                                                                  0B Heavy vehicles
Gazettal Direction
Is the direction of the traffic flow. It can be easily recognised by              4-Bin
                                                                                  1A     Short vehicles
referring to the name of the road eg. Road Section: 10A Brisbane -                1B     Truck or bus
Gympie denotes that the gazettal direction is from Brisbane to Gympie.            1C     Articulated vehicles
                                                                                  1D     Road train
Maps                                                                              12-Bin
Display the selected location from a range of viewing                             2A     Short 2 axle vehicles
levels, the start and end position details for the AADT                           2B     Short vehicles towing
Segment and the location of the traffic count site.                               2C     2 axle truck or bus
                                                                                  2D     3 axle truck or bus
                                                                                  2E     4 axle truck
Region                                                                            2F     3 axle articulated vehicle
For administration purposes the Department of Transport                           2G     4 axle articulated vehicle
and Main Roads has divided Queensland into 12 Regions.                            2H     5 axle articulated vehicle
                                                                                  2I     6 axle articulated vehicle
                                                                                  2J     B double
Road Section                                                                      2K     Double road train
Is the Gazetted road from which the traffic data is collected. Each               2L     Triple road train
Road Section is given a code, allocated sequentially in Gazettal
Direction. Larger roads are broken down into sections and
identified by an ID code with a suffix for easier data collection and
reporting (eg. 10A, 10B, 10C). Road Sections are then broken
into AADT Segments which are determined by traffic volume.

Segment Site
Is the unique identifier for the traffic count site
representing the traffic flow within the AADT Segment.




                                                                             Copyright
                                                                             Copyright The State of Queensland (Department of Transport and Main Roads) 2013

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                                                                             attribute this material, cite State of Queensland (Department of Transport and Main Roads) 2013