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The RSD reads the emissions of thousands of vehicles and gives a rating of good,fair or poor for drivers in real time.

The Department of Water and Environmental Regulation's (DWER) CleanRun program uses an Accuscan 4600 remote sensing device (RSD) to monitor the exhaust emissions of passing vehicles.

The RSD is used to:

  • determine vehicle fleet trends over time;
  • determine average fleet emissions;
  • detect high emitting vehicles; and
  • raise awareness of vehicle emissions among drivers.

The RSD is also designed to help drivers make the link between efficient vehicle performance and savings on fuel.

Download reports:

RSD monitoring in 2017

The 2017 RSD monitoring program covers locations across Perth and Mandurah across November and December, with DWER carrying out monitoring of up to 18,000 vehicles at six sites, for two days per site. The 2017 monitoring locations and dates include those listed below.

  • Hill View Terrace, St James. 14-15 November, 7am-2pm
  • Weaponess Road, Wembley Downs. 21-22 November 7am-2pm
  • Spearwood Avenue, Spearwood. 28-29 November, 7am-2pm
  • Illawarra Crescent South, Ballajura. 5-6 December, 7am-2pm
  • Lesmurdie Road, Lesmurdie. 12-13 December, 7am-2pm
  • Prindiville Drive, Wangara. 19-20 December, 7am-2pm

Frequently Asked Questions

How does the RSD work and what does it measure?

The RSD measures exhaust emissions as a vehicle drives through a light beam. The light beam is absorbed by the pollutants in the exhaust.
The amount of light absorbed is measured by a sensor and this is used to determine the amount and type of pollutants produced by the vehicle.
Emissions information collected includes total hydrocarbons (THC), carbon monoxide (CO), nitric oxide (NO) and particulates (as Ultra Violet smoke).
Download the CleanRun brochure - free health check for your vehicles emissions 2.8 MB

What factors influence my vehicles emissions?

  • Fuel type and quality.
  • Engine design or modifications.
  • Maintenance regimes.
  • Driving techniques.
  • Road and traffic conditions.For tips to reduce vehicle emissions see EcoDriving - driving down emissions.

What is the CleanRun smart sign?

The CleanRun smart sign provides immediate feedback to the driver about the emissions performance of the vehicle as they drive past. The display reads:

  • Your emissions are GOOD = saving money
  • Your emissions are FAIR = costing money
  • Your emissions are POOR = losing money

What happens if my vehicle generates a 'poor' emissions reading?

The RSD is being deployed for public education/awareness, not compliance purposes. You will not be fined.
The vehicle may need servicing or maintenance. This could improve vehicle performance and reduce emissions.
Your vehicle may be running inefficiently and using more fuel than necessary. This will be costing you more money in fuel.

Can I access the detailed results for my vehicle?

Individual results are not available.
The results for your vehicle will be kept strictly confidential, and will be combined with data from other vehicles similar to your own to produce class averages. In no way will your vehicle be identified in the study reports.

What about smoky vehicles?

Information about smoky vehicles and the DWER smoky vehicle program
Report smoky vehicles by using the smoky vehicle reporting form.

Further information

Please feel free to contact DWER on the details below if you’d like an update or have any queries about the roadside emissions monitoring.
Phone: 6467 5000
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.