TRB - VibeWire Magazine

Incorporating Nondestructive Testing in Quality Assurance of Highway Pavement Construction: Conduct of Research Report

Guest authors
December 16, 2023
0

Good quality pavement construction translates directly to good performance and long life. State departments of transportations (DOTs) apply established standards and specifications to perform a wide range of material tests through various stages of a c…

Incorporating Nondestructive Testing in Quality Assurance of Highway Pavement Construction: Manual

Guest authors
December 16, 2023
0

State departments of transportation (DOTs), as part of their routine practice, use various quality assurance (QA) procedures in their acceptance process for highway pavement construction. Absent from this QA process is the use of nondestructive testing…

TR News 347: Wheels Up! Alaska’s Rural Air Service

Guest authors
December 16, 2023
0

Rural aviation in Alaska is critical for providing access to essential services and supporting the state’s mostly rural way of life. However, current airport infrastructure faces significant operational and maintenance challenges. “Wheels Up! Alaska’s …

Elevating Equity in Transportation Decision Making: Recommendations for Federal Competitive Grant Programs

Guest authors
December 13, 2023
0

There has been a recently large increase in competitive federal grant programs for transportation, and the U.S. Department of Transportation (USDOT) has considerable control over how the programs are structured and the funds awarded to states and other…

Statewide Approaches to the Development of Comprehensive Transit Information Systems

Guest authors
December 12, 2023
0

Over the past several years, a number of state departments of transportation (DOTs) and a few metropolitan planning organizations (MPOs) have taken on the role of developing statewide/regionwide transit information systems that are intended to collect …

Alkali-Silica Reactivity Potential and Mitigation: Test Methods and State of Practice

Guest authors
December 9, 2023
0

The realistic assessment of alkali-silica reactivity (ASR) and identification of appropriate preventive measures remain major challenges to the concrete and aggregate industry. Guidelines for estimating ASR potential are currently provided in AASHTO R …

Business Case and Communications Strategies for State DOT Resilience Efforts

Guest authors
December 8, 2023
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As transportation agencies face an increasing frequency and magnitude of risks, strategies and tools are essential for demonstrating, communicating, and gaining support for integrating resilience into transportation decisions and investments. NCHRP Web…

Toolkit for Establishing Airport Catchment Areas

Guest authors
December 7, 2023
0

The catchment area of an airport encompasses areas where passengers are more likely to use the subject airport, even when there are other airport options in the vicinity. ACRP Web-Only Document 56: Toolkit for Establishing Airport Catchment Areas , fro…

MASH Railing Load Requirements for Bridge Deck Overhang

Guest authors
December 2, 2023
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State highway agencies across the country are upgrading standards, policies, and processes to satisfy the 2016 AASHTO/FHWA Joint Implementation Agreement for MASH. NCHRP Research Report 1078: MASH Railing Load Requirements for Bridge Deck Overhang , fr…

Ruggedness of Laboratory Tests to Assess Cracking Resistance of Asphalt Mixtures

Guest authors
December 2, 2023
0

Cracking and durability issues of asphalt pavements have been primary concerns of departments of transportation the last two decades. Several modes of asphalt pavement cracking exist—fatigue, top-down, reflective, and thermal—and all are influenced by …