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How to use this Map
Overview
The Traffic Volume Viewer allows you to browse and search for available traffic count data in NSW. Data is available from 2006 up to the current year.
The map shows the locations of traffic count stations
map marker icon counter
, which report the number of vehicles only, and traffic classifier stations
map marker icon classifier
, which count the vehicles and differentiate between light and heavy vehicles. For many classifier stations, a percentage of traffic comprised of heavy vehicles
heavy vehicle icon
is available.
Map Visualisation
  • Transparent blue circles
    on the map provide an at-a-glance indication of high versus low traffic counts.
  • The bigger the circle, the higher the traffic count.
  • The visualisation can be turned off to remove the circles from the map.
Search
  • You can search for a station by its location (such as street address or suburb) or by station ID, if known (e.g. “74202”).
  • You can also select an area, such as a road, suburb or Local Government Area to filter only the stations located within the selected area.
  • Click the cross icon to clear your search selection.
Stations on the map
  • Hover over a map marker with your mouse to view the Annual Average Daily Traffic count at that station for the currently selected year.
  • The AADT will either be a total for both directions of traffic, or for one direction only (where the data for the other direction is not available).
  • Where available, the percentage of AADT made up of heavy vehicles will also be indicated.
  • Change the year selection by moving the year slider between 2006 and the current year.
Station AADT & Information
  • View all information for a station by clicking on it either from the map or from the list of search results. The quality of the traffic count information for the selected station will be indicated with 4 or 5 stars
    data quality star
    .
  • AADT for every year from 2006 to current (where available) will be displayed in a table that can be navigated between years.
  • Depending on the station, the AADT may be available for one or both directions of traffic (
    North traffic
    Northbound,
    South traffic
    Southbound,
    East traffic
    Eastbound and
    West traffic
    Westbound).
  • To view AADT for specific types of days or times of day only, use one of the filters: Weekdays, Weekends, AM peak hours, PM peak hours, Off peak hours and Public Holidays.
  • You can switch between the table format and chart formats of AADT data by clicking the chart
    Chart Icon
    and table
    Table Icon
    tabs.
  • For stations with classification data, an option to show the percentage of heavy vehicles for each AADT number will be available.
  • Click on the “dots” button
    collapse expand icon dots
    to view station information, including lane count, road classification type and admin, Roads and Maritime Services Region and co-ordinates.
Hourly Data
While the AADT data provides an annual average traffic count, you can also access the raw hourly data for each station.
Click on the “Show Hourly Data” button to view and download traffic count data for the selected station for each hour of each day (for the date range where data is available).

Download

  • All data presented on the map can also be downloaded into a CSV file.
  • You can download station information for all stations on the map (which will contain information on station name, id, location, quality indicator, Local Government Area, lane count, road classification type and admin, region and co-ordinates).
  • You can download all available AADT data for the currently selected year (you can change the current year selection by moving the year slider).
  • Or, you can download all available AADT data for all years from 2006 to current.
Methodology Used
What do the numbers mean?
All Days (AADT) - This includes volume from all days of the week with no exclusions for public holidays or weekends.
Weekdays (AAWT) - This includes volume from Monday through to Friday. Three AADT figures are provided:
  • AM Peak - Traffic volume during the hours of 6am to 10am.
  • PM Peak - Traffic volume during the hours of 3pm to 7pm.
  • Off Peak - Traffic volume during all hours of the day excluding 6am to 10am and 3pm to 7pm.
Weekends (AAWET) - Traffic volume for Saturdays and Sundays only.
Public Holidays (AAPHT) - Traffic volume from all days of the year defined as a Public Holiday (according to nsw.gov.au)
Calculation
The Annual Average Daily Traffic (AADT) provides an estimate of traffic volume on a typical day of the year and is calculated as follows:
  1. Calculate the daily total for the each traffic collection station (365 figures).
  2. Calculate an average for each day of the week for each month (7 days x 12 months = 84 figures).
  3. Using the data from Step 2, create an average for each day of the week (7 figures, one each for Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday).
  4. Average the 7 daily averages from Step 3 to calculate the overall figure for the year, which is the resulting AADT.
Data quality
The underlying data used to calculate the Annual Average Daily Traffic (AADT) is the hourly volume from each traffic collection station. This means each traffic collection station is expected to provide 24 observations per day. For the data provided to be considered reliable, it needs to pass through a number of data quality checks.

The first check is the regularity of data, quantifiable by at least 19 hourly observations per day. If it has not provided 19 hourly observations on a specific day, then that day is excluded from the analysis.

The second check relates to the consistency of the volume being recorded.
  • At least one figure for each day of the week within each month is required (a minimum of 84 figures per year - 7 days x 12months).
  • The daily volume from each traffic collection station is then compared to the average for that day of the week in the month. For example, Monday 3 June 2013 is compared to the average volume figure for all Mondays in June 2013. If the daily volume is greater or less than 20% of the average, that specific Monday is then excluded from the analysis, as the figure is considered inconsistent.
Note: When a traffic collection station is also a classifier, it will provide observations for a variety of different vehicle classes per hour, including light and heavy vehicles. It is possible to not have an observation in every vehicle class for every hour. To provide an indication of the data quality for the traffic collection stations that classify, the data quality check for the number of observations focuses on light vehicles only, as heavy vehicle observations can be intermittent during the day.
Disclaimer
Although every effort has been made to ensure the quality of the data, the NSW Roads and Maritime Services cannot guarantee the accuracy of the data and does not accept responsibility for any consequences arising from its use.
Contact
For any further enquiries or to provide feedback, please contact the Journey Information Digital Team.
Journey.Information@rms.nsw.gov.au
© Roads and Maritime Services 2015
Updated: {{updateDate}}