The Colorado Experience with Inspection/Maintenance Data Handling: Machine Readable Forms

摘要

This report presents a comprehensive discussion of the data handling process in Colorado's decentralized vehicle emissions inspection/maintenance (I/M) program. The purpose of the report is to give other states with operating or planned decentralized I/M programs an opportunity to consider Colorado's innovative and highly successful method of data collection and analysis. The report describes the development and implementation of the Colorado system which uses machine readable forms in order to deal with the large amount of data generated from the many private garage inspection stations. The report also discusses a unique approach used by the State to ensure the use of the greatest amount of valid data in various categories of analysis. Appendices to the report contain complete documentation of the forms, procedures, and data analysis techniques used in the Colorado system.