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Automated Data Feature Extraction from Bridge Plans
5/1/2024 8:00:48 PM
In bridge engineering, machine learning (ML) and artificial intelligence (AI) have been employed to enhance the efficiency of the structural design phase, aid in the selection of optimal bridge types, produce cost estimates, conduct realtime structural health monitoring, predict structural response and deterioration, reconstruct data for comprehensive health assessment, and prioritize maintenance efforts. The TRB IDEA (Innovations Deserving Exploratory Analysis) Program's NCHRP IDEA Final Report for Proj...
Addressing Climate Resilience and Greenhouse Gases in the Transportation Planning Process
4/30/2024 6:00:00 PM
Many state departments of transportation (DOTs) are undergoing organizational changes to address climate change. Changes range from hiring additional staff to creating new offices within the organizational structure of the agency. State requirements in the form of legislation, executive orders, and climate action plans are primary drivers for state DOT involvement with climate change. NCHRP Synthesis 624: Addressing Climate Resilience and Greenhouse Gases in the Transportation Planning Process , from TRB...
On-Demand Aviation Services for Mobility, Logistics, Emergency Response, and Humanitarian Use Cases
4/26/2024 1:00:59 PM
Aviation is undergoing a transformation. Advancements in technology are enabling innovations in regional and on-demand aviation. Many challenges are currently being addressed, including community acceptance, safety, equity, issues around planning and implementation, airspace, and operations. Transportation Insights 4: On-Demand Aviation Services for Mobility, Logistics, Emergency Response, and Humanitarian Use Cases , from TRB's Airport Cooperative Research Program, summarizes an ACRP Insight Event held ...
Taxonomy and Terms for Stakeholders of Older Adult Mobility
4/24/2024 6:00:00 PM
The community of stakeholders in safe mobility for older adults use technical terms or expressions that can have very specific meanings across disciplines. The variety of different interpretations often leads to miscommunication. Moreover, the terminology continually changes to keep pace with advances in technology, measurement tools and methods, and transportation options. TRB's Transportation Research Circular E-C289: Taxonomy and Terms for Stakeholders of Older Adult Mobility provides a referenc...
Programmatic Implementation of Alternative Contracting Methods
4/17/2024 6:00:30 PM
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 projects. NCHRP Synthesis 625: Programmatic Implementation of Alternative Contracting Methods , from TRB's National Cooperative Highway Research Program, documents state DOT practices of programmatic approaches to ACMs.
Practices for Statewide and MPO Coordination
4/17/2024 6:00:29 PM
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 practices depending on their specific contexts. NCHRP Synthesis 626: Practices for Statewide and MPO Coordination , from TRB's National Cooperative Highway Research Program, documents current DOT strategies and practices to facilitate coordination between s...
Tactile Wayfinding in Transportation Settings for Travelers Who Are Blind or Visually Impaired
4/12/2024 6:00:00 PM
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 environments where some cues, such as detectable edge treatments, the sound of surging parallel traffic, or other indicators may be inconsistent, confusing, misleading, or missing. TCRP Research Report 248: Tactile Wayfinding in Transportation Settings for T...
Subgrade Soil Susceptibility to Shrink/Swell and Frost Heave: Effects on Pavement Performance
4/12/2024 5:15:00 PM
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 Research Report 1096: Subgrade Soil Susceptibility to Shrink/Swell and Frost Heave: Effects on Pavement Performance , from TRB's National Cooperative Highway Research Program, presents a state-of-the-art update to pavement design procedures to better reflect the...
TR News 348: Intercity Buses: Planning for a Post-Pandemic Paradigm
4/11/2024 1:00:00 PM
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 customer-friendly applications and electronic ticketing, and customers were enticed by free Wi-Fi and onboard entertainment. " Intercity Buses: Planning for a Post-Pandemic Paradigm," by Matthew W. Daus, details that while a full recovery has not yet o...
MASH TL-3 Deflection Reduction for 31-Inch Guardrail: A Guide
4/9/2024 2:12:23 PM
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 to reduce deflections. NCHRP Research Report 1100: MASH TL-3 Deflection Reduction for 31-Inch Guardrail: A Guide , from TRB's National Cooperative Highway Research Program, presents a guide on the use of stiffening mechanisms to reduce the deflection for 31-...
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