TRB - VibeWire Magazine

Programmatic Implementation of Alternative Contracting Methods

Guest authors
April 18, 2024
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Alternative contracting methods (ACMs), including design-build, construction manager/general contractor, and public-private partnerships have added a wide range of options for state departments of transportation (DOTs) to consider when delivering proje…

Practices for Statewide and MPO Coordination

Guest authors
April 18, 2024
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State departments of transportation (DOTs) are required by federal law to coordinate transportation planning and programming processes with metropolitan planning organizations (MPOs) in the state. However, state DOTs and MPOs have varying coordination …

Tactile Wayfinding in Transportation Settings for Travelers Who Are Blind or Visually Impaired

Guest authors
April 13, 2024
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Travelers who are blind or visually impaired use a variety of cues and strategies to orient themselves within their surroundings and move through space to where they want to go. This wayfinding process can be particularly challenging in complex urban e…

Subgrade Soil Susceptibility to Shrink/Swell and Frost Heave: Effects on Pavement Performance

Guest authors
April 13, 2024
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Expansive clay soils that are susceptible to shrink and swell and silty soils that are susceptible to frost heave are found in many parts of the United States. At these locations, these soils serve as the subgrade of the pavement structure. NCHRP Resea…

TR News 348: Intercity Buses: Planning for a Post-Pandemic Paradigm

Guest authors
April 11, 2024
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The intercity bus industry experienced unprecedented growth before the COVID-19 pandemic and seemed poised for further expansion. The industry embraced technology to provide dynamic scheduling and pricing, booking and boarding were simplified through c…

MASH TL-3 Deflection Reduction for 31-Inch Guardrail: A Guide

Guest authors
April 10, 2024
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Roadside obstacles are often too close to the roadway to permit the installation of common guardrail designs. Guardrail systems are often modified with a combination of tighter post spacing, nesting of rails, and other guardrail stiffening mechanisms t…

Combined High-Visibility Enforcement: Determining the Effectiveness

Guest authors
April 5, 2024
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The National Highway Traffic Safety Administration defines high-visibility enforcement (HVE) as a universal traffic safety approach designed to create deterrence and change unlawful traffic behaviors. HVE combines highly visible and proactive law enfor…

Wintertime Pavement Maintenance Practices

Guest authors
April 5, 2024
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State transportation agencies have many tools available with which to maintain pavements proactively. These include tools such as pavement management systems to track roadway conditions and life cycle cost analysis tools. NCHRP Synthesis 623: Wintertim…

Transformational Technologies and Mobility Inclusion Playbook

Guest authors
April 5, 2024
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Changes in technology provide opportunities and risks to mobility, particularly as they relate to traditionally and newly underserved populations. In recent years, economic, environmental, and social forces have quickly given rise to shared and on-dema…

Transformational Technologies and Mobility Inclusion Playbook

Guest authors
April 5, 2024
0