United States Department of Transportation
i
Traffic Monitoring Guide [2022]
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2022-12-01
[PDF-5.98 MB]
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Abstract:This edition of the Traffic Monitoring Guide (TMG) is intended to provide the most up-to-date guidance to State highway agencies about the policies, standards, procedures, reporting, and equipment utilized in a traffic monitoring program. The TMG presents recommendations that help improve and advance current programs with a view toward the future of traffic monitoring and with consideration for transportation regulations resulting from the Fixing America's Surface Transportation (FAST) Act and its predecessors. The needs for traffic monitoring data at both the Federal, State, and local levels require that agencies have a well-designed traffic monitoring program. Traffic data are needed to assess current and past system performance and to predict future performance. Improved traffic data, including data on ramps, are needed for reporting in the Highway Performance Monitoring System (HPMS), and there are now opportunities to use traffic data acquired from Intelligent Transportation Systems (ITS) to support coordination of planning and operations functions at the various agency levels. Continued improvements in traffic data collection technology have allowed States to improve their data collection processes and to streamline quality assurance and quality control (QA/QC) procedures. New technology also enables States to collect data on micromobility traffic, including bicycle and pedestrian traffic. The use of micromobility traffic data supports analyses regarding the impacts to the transportation network (on volumes and safety) resulting from the use of bicycles and other micromobility devices as alternative travel methods. The new technologies and procedures for traffic monitoring presented in the TMG are supplemented with practical examples from State experiences to improve traffic monitoring programs. The TMG is written to assist both experienced traffic data collection personnel and those who are less experienced or new to traffic data collection. Reference material that will benefit traffic data collection programs is found in the Appendices. This edition of the TMG also includes data formats for reporting traffic data, including the Individual Vehicle Record (IVR) format for reporting volume, vehicle speed, vehicle classification, and vehicle weight data. Data formats are also provided for reporting micromobility data for those agencies with capabilities to collect this type of data. This edition of the TMG has been developed with considerable input from State traffic data program managers. This approach has resulted in a practical guidance document that FHWA anticipates will be helpful to States in improving their business processes, technology, and equipment used to successfully manage their traffic monitoring programs.
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