Use of GNSS to Implement CO2 Charging

With respect to fuel consumption and CO2 emissions, driver behavior is very important. In order to establish a fair policy of tolling based on CO2 emissions, it is then of uttermost importance that a distinction between “good” and “bad” drivers is established, and that the “ecological toll” is proportional to the actual CO2 emissions of the vehicle as it is driven by a specific driver. In short, CO2 taxation should be inline with the “pay per use” philosophy that is now becoming prevalent in the road domain. This charge – named “eco toll” onwards – is based on numerical correlations for fuel consumption and CO2 emissions of gasoline and diesel light-duty vehicles. These correlations can then be incorporated in the vehicle “Road User Charging OBU” so a taxation policy based on CO2 emissions can be applied in certain zones, instead or on top of, other tolls. The combination the GNSS (Global Navigation Satellite System) positioning with the estimation of the CO2 emissions can provide a sound platform for the eco-toll. Based on the above goals, two approaches for calculating CO2 emissions are possible. The first – based on the availability of vehicle speed, acceleration and road grade – requires that the precise position of the vehicle is known at all times. The second – based on the availability of engine operation data such as calculated load and intake air flow – requires additionally on-board diagnostics (OBD) information.


  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; References;
  • Pagination: 12p
  • Monograph Title: ITS Connections: Saving Time. Saving Lives

Subject/Index Terms

Filing Info

  • Accession Number: 01146248
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 30 2009 9:35AM