Loading...

Associating Vehicular Characteristics of Urban Fleet and Safety Factors with the Amount of Polluted Emissions

Elahi, Hamid | 2011

279 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 42343 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Vaziri, Manouchehr
  7. Abstract:
  8. One of the methods that have been used in order to mitigate the air pollution problem is the IM program in order to identify the high polluting vehicle and make them to adjust their engine in accordance to the emission standards. In Iran due to the air pollution problems the government operates a rudimentary IM program based on the idle engine test utilizing an exhaust gas analyzer which should be done annually. While IM programs usually regarded as a useful tool for soothing the air pollution, one of the criticisms about the program is that it is required for the entire fleet and it reduces the cost effectiveness of the program. This research studies the relationship between the vehicular characteristics and safety factors with emission.The test results which contains the vehicle characteristics such as weight, model year and vehicle type are gathered on the test center. Nearly 49000 data gathered from the IM center in Mashhad. Each data set contains information about the CO and HC emission and vehicle age, weight, type and ownership in addition to the safety- related factors. After preparing the database at first the univariate and multivariate analysis is conducted. Then this data used in order to estimate Logit models of test failures and regression models of emissions. In the end by categorizing the vehicles in the database, the effect of vehicle type and age on the safety and emission variables is examined. The results indicates that vehicle age, type and ownership play a significant role both in probability of emission test failure and amount of predicted vehicular emission. The result shows the effect of vehicle age and manufacturer on safety and emission variables
  9. Keywords:
  10. Air Pollutant ; Car Inspection Test ; CO Test ; HC Test ; Maximum Slide Slip ; Minimum Force Absorbtion

 Digital Object List

 Bookmark

No TOC