Develop a regional ITS architecture with a common data server to facilitate ITS integration in a region
Experience with the ITS integration effort undertaken by the Metropolitan Model Deployment Initiative (MMDI)
Phoenix,Arizona,United States; San Antonio,Texas,United States; Seattle,Washington,United States; New York City,New York,United States
Evaluation of the ITS deployment in the MMDI identified key characteristics of ITS integration that are relevant today. The following recommendations are based on the experiences of MMDI managers and support ITS project goals of efficiency and productivity.
- Develop a regional ITS architecture with a common data server. A common data server is the backbone of a regional, integrated ITS platform. It facilitates the exchange of data between distinct ITS components in a region, enabling each system to respond to real-time traffic conditions. Each of the four MMDI model sites cited in the evaluation successfully used a common data server for the purpose of collecting data from various sources (e.g., traffic cameras and emergency responders) and then distributing it as actionable information to different users (such as transportation managers of transit systems or highways, emergency responders and the traveling public). An important note is that the servers in the model deployment sites were successful whether they used a central or distributed system.
- Consider a real-time traveler information system as the first ITS component to be deployed in the development of an integrated, regional ITS system. Results from the MMDI show that traveler information systems deliver among the strongest benefits of ITS components deployed. Thus, the MMDI evaluators recommend that regions with individual repositories of traveler- information system in place begin the development of a regional system by first deploying traveler information systems. Among the features of a traveler information system that led to highly successful improvements were 1) point-to-point freeway times provided over the traveler information website as well as changeable message signs, 2) information on the website on roadway and weather conditions that affected roadway conditions, and 3) bus arrival times on web applications for transit users.
- Keep in mind that benefits delivered by ITS integration will most likely take time to reach their potential. The evaluation of the MMDI found that the time frame for realized benefits of integrating ITS can be longer than non-ITS improvements. Very early results may not reveal the benefits that can be delivered months or years later, and there can be longer term benefits that had not been planned. For example, the integration effort in Phoenix led to an unanticipated benefit: the response team (REACT) in Maricopa County now assists local police in county and non-county roadways for incidents and special events in lane closures, diversion of traffic and identification of alternate routes. The effort to integrate led partners to realize the potential benefits if REACT were to provide services to the whole region.
Published By: U.S. Department of Transportation, Federal Highway Administration
Source Date: 2001
EDL Number: 13599
Other Reference Number: FHWA-OP-02-023URL: http://ntl.bts.gov/lib//jpodocs/repts_te/13599.html
Average User Rating
Intelligent Transportation Systems > Roadway Operations & Maintenance > Information Dissemination
Intelligent Transportation Systems > Traffic Incident Management > Information Dissemination
Intelligent Transportation Systems > Transit Management > Information Dissemination
Intelligent Transportation Systems > Freeway Management > Information Dissemination
Intelligent Transportation Systems > Traveler Information > Pre-Trip Information
Intelligent Transportation Systems > Traveler Information > En Route Information