Project Title: Transborder Trucking and Air Quality in the California-Baja California Border Region

SCERP Project Number: A97-7

Principal Investigator: Alan Sweedler

Task Manager's affiliation: San Diego State University

Goal: Emissions from mobile sources are a major cause of air pollution in the border region. This project addressed the problem of estimating emissions from heavy-duty trucks by conducting studies in Tijuana and Mexicali aimed at obtaining the input data needed to effectively utilize computer-based models that estimate mobile emissions.

This project was aimed at characterizing heavy-duty trucks (gross vehicle weight over 8,500 pounds) crossing the border into California and to estimate emissions from these trucks. The number of heavy-duty trucks crossing the border and operating within the border zone has greatly increased since the signing of NAFTA and those numbers will continue to increase in the future. Data was gathered to estimate emissions of CO, HC, NOx, SOx, and PM10. This information is used in computer models to estimate future levels of air pollution.

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