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Frequently Asked Questions
Traffic data is obtained by installing equipment on the road. Counts may be temporary, installed on the road for days, weeks or permanently, monitoring traffic year round.
Temporary counts use portable data loggers and rubber tubes extended across the roadway. Permanent installations are called Network Performance Sites and have fixed infrastructure.
Travel behaviours vary throughout the year due to seasonal changes, for example families travel to holiday destinations during school holidays and long weekends. Network Performance Sites can give us a good picture of the seasonal behaviour by measuring traffic throughout the year but it is not practical to install infrastructure on every road.
Using the patterns each Network Performance Site is categorised into a Seasonal Behaviour Group. These groups are used to generate the seasonal adjustment factors which are applied to short term counts in order to make them representative of the annual conditions. The numbers provided through trafficmap are adjusted to give you a typical day, hour or quarter hour within the year collected.
Seasonal adjustment is based on the patterns exhibited by all traffic and does not take into consideration changes in freight over time. Freight movement is very complex and varies based on many different factors such as crop growth, shipping movements and international markets. The freight figures provided in trafficmap are based on the proportion of freight during the specific period collected.
Using the Map
Cars and Truck data collection locations.
These locations have traffic counters that can determine the type of vehicle based on the number and configuration of the axles. They also capture speed of travel.
Cars data collection locations.
These locations have traffic counters that can determine a vehicle count only. This type of counting is limited to residential roads with a low proportion of multi-axle vehicles.
Bicycle data collection locations.
These locations have bicycle counters located on Principal Shared Paths (PSPs) and Recreational Shared Paths (RSPs).
Network Performance Site (NPS) data collection locations.
These are strategic locations where data is collected on a continuous basis.
Weigh in Motion (WIM) data collection locations.
WIM sites are Network Performance Site (NPS) with sensor technology to capture the weight of passing vehicles.
Traffic light locations.
Provides a weekly snapshot of hourly traffic counts at more than 1000 locations.
Video survey locations.
Provide links to the data collected from video surveys. Information includes vehicle, cyclist and pedestrian counts.
Video footage will not be accessible from trafficmap
Hovering over an icon will display a summary of the latest available traffic volume information.
A panel will appear to the left of the page when the icon is selected displaying hourly volumes and speeds (if available) as well as a list of downloadable reports.
Count sites can be filtered based on type of collection and the year data was collected.
For example, to identify locations where the type of vehicle is available for only the past two years. Unselect 'Cars' and 'Bicycles' and drag the time slider down to limit the range from 2015 to 2017. The latest year will be the default end of the time slider to provide the most current collection.
Satellite view is available by clicking the satellite icon displayed on the right side filter panel above the traffic light icon.
The google traffic feature is available and displays realtime traffic conditions overlayed onto major roads and highways. Click the traffic light icon on the right side filter panel.
Vehicle types in trafficmap are bicycles, cars (include cars towing a trailer or a caravan) and trucks. The type is determined using the axle configuration of each vehicle and is described by the Austroads 1994 Classification Scheme.
For a more detailed breakdown into each of the 12 Austroads Classifications download the Volume by Class report.
There are different ways to count traffic depending on some conditions at the location to be counted, such as the number of lanes and whether there are adequate places to afix the equipment. For short term counting the difference is noticable to a road user by the number of tubes installed across the road.
When a single tube is installed across the road each axle passing over the tube will be counted. This number is then divided by two, assuming all vehicles have only two axles, to provide an indicative number of vehicles. This form of counting is avoided on freight routes as it will overcount. It is typically used at locations where variable speed and congestion make classification counts problematic.
A pair of parallel tubes can determine the actual number of vehicles at a location and their type (in accordance with the Austroads 1994 Classification Scheme) and are known as classification sites. This is done by detecting each axle and analysing the relationship between their spacing and grouping. Speed information can also be obtained from these collections.
This is why, in trafficmap there are some sites which don't have any information about vehicle type or speed.
A selection of reports are available which show the number and type of vehicles as well as the speed of travel.
Report availability is based on what type of data was collected at the site, with Network Performance Sites having the widest range of reports.
To see a description of the reports available select the information icon on the Reports panel. Note that this will only show you the reports available for the type of site you have selected.
When you select a report it opens in a new tab in your browser. You can save this using the browsers download or save feature or copy the web address from the address bar. This link will remain active until additional data is available for that location.
All reports can be downloaded as a zip file by selecting the Download All Reports option at the bottom of the list of reports.
Traffic light information is now available using the traffic light icon. The data includes hourly counts over the course of a week. This data is refreshed every 3 months.