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Traffic light information now available
Looking for traffic light information? You can now download data on the number of vehicles passing through a set of traffic signals (on an hourly basis) over seven days. The data is refreshed every 3 months. Click on the Traffic light icon icon.
Easy access to results from road video surveys
You can now access the results of video surveys undertaken at various points on the road network by Main Roads over the last six years. The data includes vehicle, pedestrian and cyclist counts over 24 hours – peak period information is also available at some sites. Video footage will not be accessible from trafficmap. Click on the Video survey icon icon.
Weigh in motion sites (WIM) are easy to locate with a new icon Weigh in motion icon
Need WIM data? We’ve created a new icon to make it easier to identify which of our traffic count sites also incorporate weight logging technology. Look out for additional mass related reports over the next 12 months.

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Frequently Asked Questions

If you have further questions or are having trouble accessing trafficmap, please contact us at or via Main Roads Customer Service on 138 138.

Traffic Counts

What is traffic data?
Traffic data refers to the information Main Roads collects about vehicles travelling on Western Australian roads. This information includes the number and type of vehicles and speed of travel.
How is traffic data collected?

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.

Does traffic vary in different seasons? How does this affect the data?

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.

What is a Network Performance Site?
They are sites which continuously collect traffic information for 24 hours of the day, each day of the year. They are installed at strategic locations on major roads to monitor changes in travel demand. There are approximately 170 sites collecting information about the number, type and speed of vehicles on the road. A further 50 sites are situated on cycle paths to report on the travel behaviours of cyclists.

Using the Map

How often is Trafficmap updated?
Trafficmap data is updated as new data becomes available.
What do the numbers in the green circles mean?
The green circles on a map are called clusters and indicate the number of traffic count sites that are in close geographic vicinity (dependant on what scale you are viewing the map).
What do the icons mean?
Cars and Trucks Icon

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 Icon

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 Icon

Bicycle data collection locations.

These locations have bicycle counters located on Principal Shared Paths (PSPs) and Recreational Shared Paths (RSPs).

NPS Icon

Network Performance Site (NPS) data collection locations.

These are strategic locations where data is collected on a continuous basis.

WIM Icon

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 Icon

Traffic light locations.

Provides a weekly snapshot of hourly traffic counts at more than 1000 locations.

Video Survey Icon

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

How do I display traffic data?

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.

Can I see the data in a table?
Select the table icon to the right on the graph icon on the left side panel. You can also download the data as a spreadsheet so you can reformat it to go in documents and reports.
What filtering options are available?

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.

How can I find a collection location?
Using the search box, type in a road name, suburb, postcode, coordinates (decimal degrees) or a count site number. Matches will be listed automatically for your selection as you type, the top suggestion is selected if you hit enter or the search icon.
Can I turn on satellite view?
Satellite Icon

Satellite view is available by clicking the satellite icon displayed on the right side filter panel above the traffic light icon.

Can I view real time traffic conditions?
Traffic 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

Is information available about cyclists?
Information on bicycle usage is collected at 50 sites located on Principal Shared Paths (PSPs) and Recreational Shared Paths (RSPs) in the Perth metropolitan area as well as Bunbury and Karratha.
What traffic data is displayed on trafficmap?
Trafficmap displays traffic counts taken over the past 6 years (including the current year). Reports can be downloaded displaying latest count information. However, Network Performance Sites report on patterns over longer periods of time including past years.
Is speed measured?
Certain locations capture the speed of vehicles to provide statistics on the typical speed of travel (median) and the speed at which the majority of vehicles are travelling at (85th percentile).
Do you have information on the types of vehicles using the road?

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.

Some locations don't have any information on vehicle type or speeds. Why is this?

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.


What reports are available?

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.

How can I download a report?

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.

General Information

What is an SLK?
A Straight Line Kilometre, or SLK, is the primary system of linear measurement used by Main Roads Western Australia to define the location of events along a road.
What is a site number?
A site number is used to identify the specific location where traffic was counted.
The information I need isn’t available in the reports, who can I contact?
We report the most commonly requested statistics but data is stored as individual vehicles so there is a wealth of information available. If you need something which isn’t reported on Trafficmap please contact us via or phone Main Roads on 138 138 to discuss.
Where do I find more information about traffic data or traffic data collection?
If you would like to understand more about traffic data or traffic data collection please contact us via or phone Main Roads on 138 138 to discuss.
I’m looking for information on traffic lights, where do I find this?
Traffic light icon

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.

The traffic light information provided on trafficmap does not provide me with the information I need.
Other traffic light/ Signalised Intersection (SCATS) data can be found on the Main Roads website.
There is no information for the road I am interested in.
If the road you are interested in is a local road the Local Government may have undertaken some traffic counting. Use the Online Local Government Directory to get in touch with them directly.
Can I see the raw data?
The raw data is not available directly from Trafficmap. The data has been collated into meaningful statistics for ease of use. If you require additional data please contact us via or phone Main Roads on 138 138 to discuss.
Why can’t I see data from other states?
Trafficmap displays data collected by Main Roads on Western Australian roads and paths only.
Contact Us

For more information contact Main Roads Western Australia at or phone 138 138.

If you need to discuss another matter, provide feedback, make complaint or report a fault this can be done online via Main Roads Western Australia Complaints and Feedback.

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