TRB - VibeWire Magazine

Development of a Compaction Quality Control Standard for the Small Diameter Pressuremeter

Guest authors
July 12, 2024
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Quality control during soil compaction is critical to the proper construction of our roadways and structures. There has always been a void between laboratory moisture-density compaction and the soil’s strength and stiffness. The TRB IDEA (Innovations D…

Establishing NDE Protocols for Use in Early Age Bridge Deck Preservation Strategies

Guest authors
July 12, 2024
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A bridge deck serves as the protective layer of the structure. However, the ingress of moisture and early age cracking in a steel-reinforced concrete bridge deck are often overlooked in their relationship to the overall trajectory of its deterioration….

Listen Up! Challenges for Asphalt Balanced Mixture Design Implementation and How the Research Community Can Help

Guest authors
July 4, 2024
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The design of asphalt mixtures for use in infrastructure applications has generated significant research and focus over recent years. Recent advancements in mechanical testing of asphalt mixtures, often referred to as “performance tests,” brought to th…

Multistate Coordination and Harmonization for AV Legislation

Guest authors
June 17, 2024
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Over two-thirds of states in the U.S. have enacted automated vehicle (AV) legislation, an executive order regarding AVs, or both. AV laws and regulations may differ for licensing, registration, operator requirements, equipment, insurance, and platoonin…

Advancing Highway Traffic Monitoring Through Strategic Research: 2024 Update

Guest authors
June 13, 2024
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Monitoring travel on the nation’s roadways is crucial for understanding the dynamics of the U.S. transportation system. This involves both broad assessments, such as calculating annual average daily traffic to report on vehicle miles traveled, and deta…

PFAS Management at Airports: A Guide

Guest authors
June 4, 2024
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Per- and polyfluoroalkyl substances (PFAS) are found in many products, from consumer products to building materials. For airports, the primary implication is associated with aqueous film-forming foams (AFFFs) used in firefighting. For many years, airpo…

PFAS Management at Airports: A Guide

Guest authors
June 4, 2024
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Risks Related to Emerging and Disruptive Transportation Technologies: A Guide

Guest authors
June 4, 2024
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Emerging technologies present many potential challenges to state departments of transportation (DOTs) and other agencies that own and manage the existing infrastructure. Significant uncertainty exists about which changes are most likely to occur and wh…

Risks Related to Emerging and Disruptive Transportation Technologies: A Guide

Guest authors
June 4, 2024
0

Improving Rider Safety for Mopeds and Seated Motor Scooters of 50cc or Less

Guest authors
May 31, 2024
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Relative to passenger cars, two- and three-wheeled vehicles such as motorcycles, mopeds, and seated motor scooters (50cc or less) are associated with a higher risk for fatalities and serious injuries in the event of a traffic crash, as they do not offe…