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3 U.S. Department of Transportation Provisions of 23 CFR Part 511 (1 of 2) Two-stage implementation □ All Interstates within 4 years (November 2014) □ Other metropolitan “Routes of Significance” as identified by States in collaboration with local agencies within 6 years (November 2016) Information to be made available □ Construction lane and road closures □ Road- or lane-blocking traffic incidents □ Hazardous conditions & road or lane closures due to adverse weather □ Travel times (in Metropolitan areas) “Metropolitan” = greater than 1 million MSA □ New additions with 2010 Census: Salt Lake City, Raleigh
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SAFETEA-LU Section 1201Real-Time System Management Information
23 CFR Part 511
AASHTO SSOMTask Force on Systems Operations Performance Measures
9 April 2013
Bob Rupert, FHWA, [email protected]
2U.S. Department of Transportation
Background – Legislation
SAFETEA-LU, Subtitle B, §1201□Real-Time System Management Information Program
Establish a real-time system management information program in all StatesMonitor traffic & travel conditions of the major highwaysShare information to address congestion problems and facilitate traveler information.
Codified by Final Rule as Part 511 of Title 23 of United States Code of Federal Regulations□23 CFR Part 511
3U.S. Department of Transportation
Provisions of 23 CFR Part 511 (1 of 2)
Two-stage implementation□ All Interstates within 4 years (November 2014)□ Other metropolitan “Routes of Significance” as identified by States
in collaboration with local agencies within 6 years (November 2016)
Information to be made available□ Construction lane and road closures□ Road- or lane-blocking traffic incidents□ Hazardous conditions & road or lane closures due to adverse
weather□ Travel times (in Metropolitan areas)
“Metropolitan” = greater than 1 million MSA□ New additions with 2010 Census: Salt Lake City, Raleigh
4U.S. Department of Transportation
Provisions of 23 CFR Part 511 (2 of 2)
Regional ITS Architecture Update□Regional architectures to be reviewed & updated as
appropriate to ensure addressing RTSMIP provisionsTimeliness (age) of information□Construction & Incident information within 20 minutes /
within 10 minutes in Metro areas□Adverse weather conditions within 20 minutes□Travel times within 10 minutes
Quality measures□Accuracy of 85%□Availability of 90%
5U.S. Department of Transportation
Metro Areas Over 1 Million
D.C.
52 metro areas as of 2010 Census
6U.S. Department of Transportation
Clarifications / Expansion of Information
Not Required by the Regulations□No requirement for dissemination to general
public, or the use of specific technologies or specific applications
□No method identified or discussed for measuring accuracy or other quality metrics▪ Flexibility to use methods appropriate to systems &
processes used to acquire information & data
□No specific (i.e., new) enforcement actions▪ Usual Federal oversight, stewardship actions
7U.S. Department of Transportation
Data Exchange Formats Not included in 23 CFR 511 regulations Section 1201(b) provides that:□USDOT to establish data exchange formats to ensure that
the data provided by highway & transit monitoring systems can readily be exchanged across jurisdictional boundaries, facilitating nationwide availability of information.
Further, 1201(c)(2) notes that Regional ITS Architectures:□Shall incorporate the data exchange formats to ensure that
the data provided by highway and transit monitoring systems may readily be exchanged with State & local governments and may be made available to the traveling public.
8U.S. Department of Transportation
Data Exchange Formats Initial list of potential standards published in 2007 Effort underway, using a system engineering approach to
develop a Data Exchange Format Specification (DXFS) and companion Guidance document□Walk-throughs with stakeholders
Center-to-Center communications□Traffic Management Data Dictionary (TMDD), v3
Completed to date:□Concept of Operations□System Requirements Specification□System Design Description
9U.S. Department of Transportation
Data Exchange Formats The User Needs are organized around the four areas
described in 23 CFR 511, with an additional area to address transit related information that is not directly covered by the Rule:□Travel Time□ Incident Information□Construction Information□Weather Information□Transit information
Guidance will include traceability among needs, architecture flows, requirements, standards, etc.□Audience is system designer / developer
10U.S. Department of Transportation
Data Exchange Formats Guidance and Data Exchange Format Specification will
be completed by fall 2013□Dependent on completion of TMDD v3.03
Concept of Operations, System Requirements Specification, and System Design Description can be provided□ In final Draft
11U.S. Department of Transportation
Real-Time System Information Management Program
Web site:http://www.ops.fhwa.dot.gov/1201
