On July 21, 2000, the Federal Communications Commission (FCC) designated 511 as the United States' national travel information telephone number. Currently, over a dozen 511 services are operational across the country serving more than 40 million people, who, in total, are currently calling 511 nearly 1 million times a month. Every service in operation provides some form of information associated with roadway conditions. While early feedback from 511 users has been positive, there is recognition within the 511 Deployment Coalition that the ultimate quality and utility of information provided via 511 is a critical part of providing valuable service to callers. With many of the services likely to have their preponderance of callers interested in roadway conditions, the quality of roadway-related content will, in many cases, dictate overall satisfaction with 511. The roadway quality 'levels' discussed in this Deployment Assistance Report (DAR) are for the basic 511 telephone travel information service. Roadway data quality needs vary greatly by application: traffic incident detection, long-range system-wide planning / modeling, oversize truck permit routing, construction project report analysis, long-range impacts of suburban development, etc. It is understood that all of these activities may need different levels of data disaggregation and quality. The purpose of this DAR is to provide, in a single document, the most up-to-date information on guidelines, state-of-the-practice, state-of-the-art, implementation experience and lessons learned related to gathering and providing quality roadway content over 511 services.


  • English

Media Info

  • Features: Figures; Tables;
  • Pagination: 33 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00960520
  • Record Type: Publication
  • Files: NTL, TRIS, USDOT
  • Created Date: Jul 7 2003 12:00AM