Investigating the Effect of Odd-Even Day Traffic Restriction Policy on Tehran Air Quality

Tehran air quality is a concern as the levels of various pollutants reach dangerously high. Several immediate and emergency solutions are pursued to mitigate the problem in the short term. Most of the solutions are traffic restrictions that create a serious challenge for citizens. One of them is the dedication of the central zone of the city to odd-even traffic restriction scheme. The purpose of the current study is to investigate the effectiveness of the method on reducing various pollutants concentrations by using advance air quality modelling approach. The performance of the modelling system was evaluated base on measured data at monitoring sites and the results shows satisfactory performance for both models in predicting meteorological parameters and pollutants concentrations. While the emission input data was reduced by 40% in the area of the odd-even traffic restriction scheme, the maximum reduction was about 20% for CO as a primary pollutant which is highly related to the traffic condition. The same scheme did not show a significant impact on NO2 emission concentration. It was seen that the effectiveness of such scheme is highly related to the type of the pollutant, meteorological conditions, and the location under study.

  • Supplemental Notes:
    • This paper was sponsored by TRB committee ADC20 Transportation and Air Quality. Alternate title: Investigating Effect of Odd-Even Day Traffic Restriction Policy on Tehran Air Quality
  • Corporate Authors:

    Transportation Research Board

    500 Fifth Street, NW
    Washington, DC  United States  20001
  • Authors:
    • Shahbazi, Hossein
    • Hosseini, Vahid
    • Hamedi, Masoud
  • Conference:
  • Date: 2014


  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; Maps; References;
  • Pagination: 13p
  • Monograph Title: TRB 93rd Annual Meeting Compendium of Papers

Subject/Index Terms

Filing Info

  • Accession Number: 01515472
  • Record Type: Publication
  • Report/Paper Numbers: 14-4257
  • Files: TRIS, TRB, ATRI
  • Created Date: Jan 27 2014 3:28PM