Appendix D - traffic impact assessment

                                                               Traffic Analysis and Reporting System                                                                        TARS
                                                      Report Notes for Annual Volume Report
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Annual Volume Report                                                            Region
Displays AADT history with hourly, daily and weekly                             For administration purposes the Department of Transport
patterns by Stream in addition to annual data for AADT                          and Main Roads has divided Queensland into 12 Regions.
figures with 1 year, 5 year and 10 year growth rates.
                                                                                Road Section
Annual Average Daily Traffic (AADT)                                             Is the Gazetted road from which the traffic data is collected. Each
Annual Average Daily Traffic (AADT) is the number of vehicles passing           Road Section is given a code, allocated sequentially in Gazettal
a point on a road in a 24 hour period, averaged over a calendar year.           Direction. Larger roads are broken down into sections and
                                                                                identified by an ID code with a suffix for easier data collection and
AADT History                                                                    reporting (eg. 10A, 10B, 10C). Road Sections are then broken
Displays the years when traffic data was collected at this count site.          into AADT Segments which are determined by traffic volume.

Avg Week Day                                                                    Site
Average daily traffic volume during the week days, Monday to Friday.            The unique identifier and description of the physical
                                                                                location of a traffic counting device. Sites are
Avg Weekend Day                                                                 located at a Through Distance along a Road Section.
Average daily traffic volume during
the weekend, Saturday and Sunday.                                               Stream
                                                                                The lane in which the traffic is travelling in. This report
Calendar                                                                        provides data for the combined flow of traffic in both directions.
Days on which traffic data was collected are highlighted in green.
                                                                                Thru Dist or TDist
Gazettal Direction                                                              The distance from the beginning of the Road Section, in kilometres.
The Gazettal Direction is the direction of the traffic flow.
It can be easily recognised by referring to the name of the                     Type
road eg. Road Section: 10A Brisbane - Gympie denotes                            There are two types of traffic counting sites, Permanent
that the gazettal direction is from Brisbane to Gympie.                         and Coverage. Permanent means the traffic counting
   G   Traffic flowing in Gazettal Direction                                    device is in place 24/7. Coverage means the traffic
   A   Traffic flowing against Gazettal Direction                               counting device is in place for a specified period of time.
   B   The combined traffic flow in both Directions
                                                                                Year
Growth Percentage                                                               Is the current year for the report. Where an AADT Year record
Represents the increase or decrease in AADT, using a                            is missing a traffic count has not been conducted, for that year.
exponential fit over the previous 1, 5 or 10 year period.

Hour, Day & Week Averages
The amount of traffic on the road network will vary depending
on the time of day, the day of the week and the week of the
year. The ebb and flow of traffic travelling through a site over
a period of time forms a pattern. The Hour, Day and Week
Averages are then used in the calculation of AADT.




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                                                                                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