The Vehicular Air Pollution Information System (VAPIS) is an user-friendly MS EXCEL based tool, designed to quickly analyze the emission trends for a single vehicular category for a single pollutant. The tool allows the user to start with the basic information on vehicular numbers, growth rates, age splits, kilometers traveled per day, average retirement age, and emission factors, and establish the vehicular number and emission trends for a period of 30 years, by age group.
Download the VAPIS 1.01 tool, brochure, operational manual, and the working paper (SIM 02-2008) on four ways to build vehicular emissions inventory.
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