This report investigates using detailed simulation models to help regional and state agencies plan for the effects of connected vehicle (CV) and autonomous vehicle (AV) technologies in long-range planning. The research integrates the DaySim activity-based travel demand model with the TransModeler dynamic traffic simulation model for Jacksonville, F
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This summary report provides a high-level overview of four experiments that investigated human factors issues surrounding cooperative adaptive cruise control (CACC). CACC combines three driver assist systems: (1) conventional cruise control, which automatically maintains the speed a driver has set, (2) adaptive cruise control, which uses radar or l
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Understanding the choices that drivers, bicyclists, and pedestrians make is critical to improving the safety and efficiency of the Nation’s roadways. The Federal Highway Administration (FHWA) seeks to understand the technological challenges of advancing the use of federated simulation and modeling and the different uses that researchers and practit
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Eco-drive is one of many techniques that have been developed to increase vehicle fuel efficiency. Connected Vehicle (CV) data is now being leveraged to allow vehicles to cooperate better within current and future environments vis-a-vis traffic conditions, signal timing, and terrain information. This study investigates the use of vehicle automation
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United States. Federal Highway Administration. Office of Operations Research and Development
2017-12-01
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Increasing traffic demand is causing more severe congestion and bottlenecks in urban environments. Constrained budgets are spurring innovations that efficiently use existing intersection footprints. From a previously sponsored research effort by the Office of Operations Research and Development (R&D), DRLT and CLT treatments were identified as two
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The Development of Crash Modification Factors (DCMF) program conducted safety evaluations of edge-line rumble stripes (ELRSs) on rural two-lane horizontal curves for the Evaluation of Low-Cost Safety Improvements Pooled Fund Study. This study evaluated the application of ELRSs on rural two-lane horizontal curves. ELRSs are a variation of common sho
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This report presents a high-level analysis of the effects of location on personal travel and trends associated with place of residence and the travel behavior of younger populations (ages 20-34). Seven distinct neighborhood typologies were created using data from the Environmental Protection Agency (EPA) Smart Location Database and the Decennial U.
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This report highlights key recommendations and noteworthy practices identified at “Rethinking I-94: MnDOT Peer Exchange” held on August 15-16, 2017 in St. Paul, Minnesota. This event was sponsored by the Transportation Planning Capacity Building (TPCB) Peer Program, which is jointly funded by the Federal Highway Administration (FHWA) and Federal Tr
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This report documents an evaluation of outcomes associated with Roadside Revegetation: A Practical Guide to Working with Native Plants, a 2007 guide encouraging agencies to adopt improved roadside revegetation practices.(1) It should be of interest to natural resource practitioners responsible for the design and implementation of revegetation proje
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Understanding the choices that drivers, bicyclists, and pedestrians make is critical to improving the safety and efficiency of the Nation’s roadways. The Federal Highway Administration (FHWA) seeks to understand the technological challenges of advancing the use of federated simulation and modeling and the different uses that researchers and practit
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United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
2017-12-01
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Public Roads
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Public Roads is the quarterly magazine of the Federal Highway Administration (FHWA). Reading Public Roads is the easiest way to keep up-to-date on developments in federal highway policies, programs, and research and technology. More specifically, the magazine "covers" advances and innovations in highway/traffic research and technology, critical nat
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2017-12-01
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On a monthly basis, each State is required to report to the Federal Highway Administration (FHWA), the amount of gallons taxed by that state. This data is analyzed and compiled by FHWA staff. The data on the amount of on-highway fuel use for each State is then used to attribute federal revenue to each State. Yearly, the FHWA, Office of Policy, prov
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FHWA's Synthesis of Approaches for Addressing Resilience in Project Development (2017) study evaluated engineering approaches for assessing current and future weather hazards, and developed solutions and methodologies that transportation agencies may apply to increase the resilience of transportation assets and systems.
Learning in Progress, NHI's quarterly newsletter, provides updates on new course launches, upcoming Web conference seminars, training programs and events, and NHI policy changes.
In recent years, state transportation agencies (STAs) have made investments in creating 3D engineered models in design, but few STAs are realizing the benefits of using these models in construction engineering and inspection. Agencies that use the models and related survey technology report time savings, safety improvements, increased confidence an
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Public-Private Partnership (P3) handback experience is very limited the U.S. and internationally. This paper analyzes the handback experience in three highway P3 projects: East-Link Bridge in Dublin, Ireland, Highway 4 (VT4 Järvenpää-Lahti) in Finland and M4 Tollway in New South Wales, Australia. Two of the projects did not have any material handba
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