Lifting the lid on Air Quality Management

The VEM is a proven solution that provides accurate data to measure how your road network is contributing towards poor air quality through vehicle missions. By delivering minute by minute information associated to location and vehicle source, the analytics engine provides the user with the necessary tool to make operational and strategic decisions to reduce vehicle emissions.

The virtues of virtual monitoring

For many years air quality monitors have been the ‘go-to’ tool for determining air quality in and around our highway networks. Whether they are diffusion tubes or automatic analysers, their accuracy is dependent on regular calibration and can be compromised by wind direction. They are ideal for understanding long term trends across an area such as a town or city. However, they are limited to being able to report the concentration of a substance at the point of analysis. However, Our Virtual Emissions Monitor assigns emissions to many points: i.e. much more widely implemented infrastructure such as traffic detection loops.

By relating emissions to the 8,000 Highways England MIDAS detection points on the  motorways, air quality (e.g. NO2 and CO2 concentrations) along corridors and at junctions can be analysed to see when (minute by minute), where (lane by lane detection sites), and with what traffic mix issues arise. Many factors can impact air quality in a given
area,  the vast majority of which we have no control over, resulting in a very complex  relationship. The intricacy of the relationship between variables makes associating cause to effect difficult and unreliable. By segregating the variables we have control over, from those we don’t, the VEM allows authorities to quickly identify increased emissions, make
informed operational decisions and measure the impact. This provides the confidence that a measured reduction in emissions will result in an improvement in air quality.

The VEM provides a platform to accurately determine the contribution of traffic on air quality allowing operators to intervene and policymakers’ justification for change.


The future…VEM v2.0

With air quality as a recognised problem, with few pragmatic solutions to accelerate the reduction of emissions, the VEM v2.0 will be designed from the ground up with the user in mind. Interoperability with your control systems will permit the management of both network goals and the ever changing demands of the network.

Learn how you can accelerate the reduction of vehicle emissions with the example of the VEM Case Study in Kirklees. Download here..


Key features

  • Data – All data is archived without any aggregation to ensure data can be retrieved for auditing of long term analysis.
  • Reporting – Pre-defined customisable reports makes consistent analysis and reporting easy.
  • Software based – There is no additional infrastructure required – no engineers to be put in harms way.
  • Security – The ARK is 27001 accredited.
  • Detection – Works with a variety of detection methods.
  • Intelligent Transport Systems (ITS) – ITS delivers equal benefits at 30% of the cost.
  • Cloud hosting – Easily scalable.
  • Systems engineering – Increases the value of your current systems by augmenting their data with emissions.
  • Emissions model – Using the same model that DEFRA uses.
  • Communication – Providing awareness of emissions.
  • Economic Analysis – A built in tool will calculate the economic costs of the NOx emitted.
  • Control – Only implement control when you need to.