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OPUS - Reducing on road traffic emissions
OPUS - Reducing on road traffic emissions

Application Area

  • Data gathering
  • Appraisal and assessment

Tool Type

  • Software

Target Audience

  • Medium-sized cities
  • Large cities
  • Metropolitan regions


Opus AccuScan™ Remote Sensing Devices (RSD) remotely measure exhaust emissions from motor vehicles as they are driven past the remote sensing device on streets and highways. The emissions are measured spectroscopically by casting a narrow infrared (IR) and ultraviolet (UV) beam of light across the road and through the trailing exhaust of passing motor vehicles. A mirror then reflects the IR/UV light back to a series of detectors that measure the amount of transmitted light at characteristic wavelengths absorbed by the pollutants of interest.

The RSD can measure the emissions of vehicles circulating under real driving conditions. Since it takes only a second to capture a measurement, these devices can capture large quantities of vehicle emissions data in a short period of time.Also, since it is a non-intrusive technique, the RSD audits the circulating vehicles without interfering with the traffic flow, therefore it can audit an entire city's fleet in a short period and with no impact on daily operations. The RSDs can measure the traffic emissions remotely, without the vehicles having to stop to be audited.

The RSD technology is an effective response to the need of improving the air quality in the European cities.Big European cities are facing huge problems in terms of air quality. The on road traffic is the responsible of most of the emissions in the cities. It is proved that a small amount of vehicles (<10%), no matter the age or type, are responsible of a huge percentage of the total road emissions and by acting only on them, savings of millions of euros could be achieved. The RSD Technology operated by Opus RSE is the best solution to attack these negative impacts provinding additional strategic advantages such as:


Improving air quality reducing the on road traffic emissions by monitoring & controlling their evolution with time.


Low budget implementation, savings in fuel consumption and EU penalties, public spending reduction and possible source of incomes.


Improving the air and quality of life, environmental awareness-raising and citizenship education.


Actions viewed favourably by the International Authorities in regards to global commitments on emissions reduction and air quality.

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Basic Information

July 2019
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Thematic Areas