Current methods require manual retrieval, editing and verification which have a high potential for error. A process needs to be developed or purchased that will combine these functions into one computerized system. A new system will not eliminate operator input, but will help insure that all data are reviewed and managed as required.
Two commercial systems are available. One system (EXPERT System), available at no charge, was developed by Colorado, Kansas and Minnesota DOTs and the FHWA. This system seems to have limitations and works with continuous volume data only. The other system is marketed by Chaparral System Corporation. This software system is for the collection, editing, verification and reporting of a wide range of traffic data. The drawback with this system is its price, approximately $200,000 to $225,000 plus annual maintenance fees. It might be possible to develop an automated system in-house but it would involve a considerable amount of time and effort.
Research is needed to investigate automated systems for retrieving, editing and verifying traffic data. The end product of this project will be to recommend to the Department how best to proceed in developing or obtaining an automated system for traffic data.