This report presents a summary of the 2019 Traffic Incident Management Capability Maturity Self-Assessments (TIM CM SA) completed by transportation personnel from 94 locations across the country between June and September, 2019. There are 55 scored questions in the TIM CM SA that are grouped into three sections: Strategic, Tactical, and Support. Th
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Dynamic part-time shoulder use (D-PTSU) opens shoulders for travel beyond fixed (or static) time periods (e.g., weekday peak periods). Dynamically operating the transportation system by matching supply-side strategies in accordance with prevailing conditions and travel demands represents an important advancement in agency adoption of Active Transpo
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The California Department of Transportation uses its Performance Measurement System to estimate work zone impacts, plan closures, manage performance during construction, and evaluate work zone management practices post-construction.
Three phases typically occur in the development of a concrete mixture: specifying, designing, and proportioning. Specifying refers to the requirements contained in the contract documents with regards to performance requirements for the fresh and hardened concrete. Mixture design is the process of selecting mixture characteristics for the intended u
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Hydraulic cement concrete (hereafter referred to simply as concrete) is composed of aggregates bound together by a hydrated cement paste. Concrete contains a significant amount of porosity including small gel pores (0.5 to 10 nm in size) that are an intrinsic feature of the hydration products formed when water reacts with cement, capillary pores (1
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United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
2019-11-01
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FHWA R&T Now
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Federal Highway Administration's FHWA R&T Now is a newsletter containing information and updates about research, technology, and development from the U.S. Department of Transportation, Federal Highway Administration. The newsletter is an electronic newsletter and is updated approximately every other month.
United States. Federal Highway Administration. Office of Planning, Environment, and Realty
2019-10-31
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This digest shares the latest information from a range of Federal and non-Federal sources, addressing transportation and its relationship to the human environment. Through this information exchange, FHWA hopes to foster dialogue at all levels and continue to further the state of the practice on these important topics in support of safety; infrastru
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United States. Federal Highway Administration. Office of Planning, Environment, and Realty
2019-10-17
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PDF
This digest shares the latest information from a range of Federal and non-Federal sources, addressing transportation and its relationship to the human environment. Through this information exchange, FHWA hopes to foster dialogue at all levels and continue to further the state of the practice on these important topics in support of safety; infrastru
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The purpose of the Exit Glacier Area summer transportation feasibility study for Kenai Fjords National Park (KEFJ) is to understand the current transportation conditions at the Exit Glacier Area and evaluate the feasibility of a range of potential actions to improve transportation conditions. This study is not a plan and will not result in a decisi
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United States. Federal Highway Administration. Office of Planning, Environment, and Realty
2019-10-03
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PDF
This digest shares the latest information from a range of Federal and non-Federal sources, addressing transportation and its relationship to the human environment. Through this information exchange, FHWA hopes to foster dialogue at all levels and continue to further the state of the practice on these important topics in support of safety; infrastru
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United States. Federal Highway Administration. Office of Bridges and Structures
2019-10-03
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PDF
This Technical Brief provides programmatic and technical considerations for evaluating and mitigating abutment scour at bridges with shallow foundations. The information supersedes certain materials on shallow foundations in two FHWA Hydraulic Engineering Circulars (HECs) “Evaluating Scour at Bridges” (HEC-18) and “Bridge Scour and Stream Instabili
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The capabilities of unmanned aerial systems (UAS) have improved exponentially over the past few years due to advances in the technology; lower prices, which have made UAS more widely available; and greater overall awareness of the technology, which has opened UAS to new uses. This progress has resulted in user-friendly equipment that can fly autono
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Unmanned aerial systems (UAS) have become increasingly popular on construction sites. In fact, UAS utilization has flourished in nearly all areas of engineering and construction. At the same time, both the affordability and capabilities of small UAS have dramatically increased. Many transportation agencies and contractors have begun to implement UA
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United States. Department of Transportation. Federal Highway Administration
2019-10-01
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PDF
The Federal Highway Administration (FHWA) is publishing this list of State Departments of Transportation (DOTs) and Metropolitan Planning Organizations (MPOs) who are required to establish targets and report progress for the performance measures related to the Congestion Mitigation and Air Quality Improvement Program (CMAQ). There are three measure
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Automation is transforming mobility. Its integration across our transportation system has the power to enhance the mobility and independence of millions of Americans, especially older Americans and people with disabilities. Cooperative Driving Automation (CDA) supports and enables automated vehicles to cooperate through communication between vehicl
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This report documents a safety analysis needs assessment for Transportation Systems Management and Operations (TSMO). It includes the following key content: syntheses of strategy-specific safety performance knowledge and capabilities (Chapter 2), a synthesis of research on interrelationships between measures of traffic operational performance and s
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Universities play a critical role in preparing future professionals to address transportation challenges and build the knowledge and skills needed on their first day of employment. The FHWA Bicycle and Pedestrian Transportation University Course provides foundational knowledge and skills to prepare future transportation professionals to understand
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2019-10-01
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PDF
Traffic Volume Trends is a monthly report based on hourly traffic count data reported by the States. These data are collected at approximately 5,000 continuous traffic counting locations nationwide and are used to estimate the percent change in traffic for the current month compared with the same month in the previous year. Estimates are re-adjuste
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