| Article ID: | iaor20031105 |
| Country: | United Kingdom |
| Volume: | 7D |
| Issue: | 1 |
| Start Page Number: | 73 |
| End Page Number: | 80 |
| Publication Date: | Jan 2002 |
| Journal: | Transportation Research. Part D, Transport and Environment |
| Authors: | Riveros Hctor G., Cabrera Enrique, Ovalle Pilar |
| Keywords: | decision theory |
Information from the Mandatory Inspection and Maintenance (I/M) Program carried out in October 1996 and the first semester of 1998 provides a useful emission database for Mexico City. Carbon monoxide (CO) and hydrocarbon (HC) exhaust emission levels were measured for at least a million private and public transportation vehicles. Analysis of this database leads us to conclude that this information can be used to test anti-pollutant policies, and is useful as a performance quality index for vehicle manufacturers. Some of the results of this analysis include: the finding of a typical exhaust emission distribution curve for each vehicle manufacturer, with differences for each brand and model for the same manufacturer, the fact that not all new vehicles pass the I/M test; and public transportation vehicles in Mexico City have almost useless catalytic converters.