New ASTM Standard Supports ADUS Intelligent Transportation Systems
Local, regional, and national organizations report transportation data to the Archived Data User Service (ADUS) to improve transportation in the United States. ASTM International has released the first in a series of standards for ADUS, which is part of the U.S. Department of Transportations National ITS architecture framework of Intelligent Transportation Systems (ITS) used in traffic and transit management.
New ASTM E 2259, Standard Guide for Archiving and Retrieving ITS-Generated Data, offers approaches to transportation data users who plan, develop, and operate Archived Data Management Systems (ADMS) to store or obtain ITS-generated data. ADUS developed ADMS to support compatible sharing of information among ITS-data users from a cross-section of public and private organizations.
Agencies collect a wide variety of data in order to implement real-time traffic control strategies such as freeway ramp metering, advanced traffic signal control, and incident management, says Richard Margiotta, principal, Cambridge Systematics, Knoxville, Tenn. These data also have great value for a wide variety of planning and management applications, such as for travel forecasting, air quality analysis, and evaluations of transportation system performance.
Margiotta chairs ASTM Subcommittee E17.54 on Archived Data User Service, which developed Standard E 2259 to provide consistent ADMS use on a national scale.
ADMS data users and policy makers can obtain a general understanding of technical approaches and terminology involved in ITS data archiving and retrieving.
ADMS data-application software-developers can use E 2259 to refine or improve existing ADMS. Administrators who collect, archive, manage, and distribute ITS data can reference the standard for practical approaches to effective ADMS operation. E 2259 promotes a structured process for ADMS development including:
Sound information technology principles for designing and implementing an ADMS, including stakeholder involvement and a user-requirements process;
Integration of ADMS development into the ITS and transportation planning activities of a region;
Retention of data as received in its original form from an ITS source;
Maintenance of data quality, including feedback to data-collection personnel; and
Provision of metadata providing an audit trail of how data was collected and processed.
The standard does not recommend strict formats and processes but provides general principles for ADMS development. The ASTM subcommittee is drafting additional ADMS standards:
A metadata standard specification for archiving ITS-generated data that will provide the exact structure for the metadata needed in addition to those attributes required for ITS-data dictionaries; and
A standard specification for archiving ITS-generated traffic monitoring data that will take the form of a data dictionary for archiving traffic data, a record structure for creating data tables, and a file transfer format.
The subcommittee will discuss plans for additional ITS-generated data standards on incident/safety, transit, and CVO/freight when Committee E17 on Vehicle-Pavement Systems meets Dec. 7-10 at the Tampa Marriott Waterside Hotel, Fla. Contact Richard Margiotta, Cambridge Systematics, Knoxville, Tenn. (phone: 865/670-8516) to participate in these activities. For ASTM membership or meeting details, contact Dan Smith, director, Technical Committee Operations, ASTM International (phone: 610/832-9727). //
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