This Guidebook provides options for MPOs in use of safety as a project prioritization factor. The guidebook includes six types of approaches and details potential criteria, analysis methods, pros, cons, data, and resource needs, for implementing these approaches at basic, intermediate and advanced levels.
Using four-dimensional (4D) models for construction project management is not a new concept. However, 4D models may be used differently in traditional delivery methods, in which there is no contractual relationship between the designer and the contractor, verses how they are used by a design-build team, which works collaboratively to develop the de
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The objective of this research was to help transportation planners, practitioners and other decision makers in rural areas and other smaller communities develop effective, locally appropriate, replicable strategies for public involvement in transportation planning and programming, especially to engage environmental justice communities in working wi
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This program guidance provides the concepts, history, precepts, and purpose of high occupancy vehicle (HOV) lanes, as well as to explain what authority is delegated to “public authorities” over HOV lanes. (The term “public authorities” is defined in Chapter III.) The authority is based on legacy legislation originally set forth in Title 23 Section
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This assessment investigates potential structural and hydraulic engineering adaptations to increase the resilience of a coastal bridge to extreme events in rising sea levels. The assessment focuses on the I-10 Bridge, which crosses northern Mobile Bay, Alabama (known locally as “The Bayway”). The seven-mile long bridge crosses open bay waters, coas
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This document presents comprehensive design examples for driven pile foundations on highway structures. The worked design examples supplement the material presented in FHWA-NHI-16-009 and FHWA-NHI-16-010, the primary FHWA guidance documents on driven pile foundations. The worked LRFD design examples address strength, service and extreme limit state
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The Tampa Hillsborough Expressway Authority (THEA) Connected Vehicle (CV) Pilot Deployment Program intends to develop a suite of applications that utilize vehicle-to-infrastructure (V2I) and vehicle-to-vehicle (V2V) communication technology to reduce traffic congestion, improve safety, and decrease emissions. These CV applications support a flexibl
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As State transportation departments consider structural adequacy as part of their routine pavement management system (PMS) activities by incorporating deflection testing, it is important to advance their practices from measuring deflection using falling weight deflectometers, which involves a slow, stop-and-go operation and requires lane closures,
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High quality data and reliable analytical methods are the foundation of data-driven decision-making. The Reliability of Safety Management Methods series includes five information guides that identify opportunities to employ more reliable methods to support decisions throughout the roadway safety management process. Four of the guides focus on speci
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The 2010 publication of the Highway Safety Manual (HSM), 1st Edition, by the American Association of State Highway and Transportation Officials (AASHTO) was an important milestone in advancing the quality of safety analyses supporting highway investment decision making. One impediment to progress that will be addressed in this informational report
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