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Research News

Standard Test Procedures for Determining the Ice Melting Capacity of Deicers

Winter road maintenance often includes the use of deicing chemicals. However, many roadway deicing products are available, and their ice melting capacity can vary significantly. In addition, the processes that states use to procure and test deicing materials are subjective in measuring performance and are becoming increasingly burdensome for staff. The objective of this project was to provide transportation agencies with an objective, standardized, repeatable laboratory test procedure for measuring the ice melting capacity of deicers.

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2023 and 2024 WSDOT-PacTrans Summer High School Transportation Camps

The demand for transportation-related workforce development programs has never been greater. In addressing this issue, the 2023 and 2024 WSDOT-PacTrans Summer High School Transportation camps were a significant effort toward attracting the next generation of science, technology, engineering, and mathematics (STEM) professionals to the field of transportation.

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Model Deployment of the Virtual Coordination Center for Multimodal Integrated Corridor Management

The Virtual Coordination Center (VCC) is a digital collaborative environment for integrated multimodal transportation corridor management. Under Federal Highway Administration sponsorship, an operational community of state, city, and county agencies—including law enforcement, transit, and transportation departments—developed, deployed, and evaluated a VCC for interagency management of significant traffic incidents in the Seattle urban corridor.

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Analytic Tools for Locating, Sizing, and Evaluating Electric Vehicle Charging Stations

To meet its anticipated growth in electric vehicle adoption, Washington state will need sufficient charging and refueling infrastructure to serve the public. This project reviewed the available analytic tools for planning electric vehicle (EV) charging infrastructure and made recommendations on how to meet legislative requirements for forecasting the needs for zero-emission vehicles and mapping recharging equipment.

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Leading Indicators of Transportation Equity: Equity in Planning

To increase equity in transportation planning, this project sought to identify key performance indicators that can measure the effects of transportation projects on vulnerable populations and to develop a framework for incorporating equity into the Washington State Department of Transportation’s (WSDOT) planning processes for long-range, regional, and corridor planning initiatives.

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WSDOT Maintenance Performance Measure Algorithms

WSDOT faces multiple challenges in managing its highway assets. The primary objective of this project was to develop a way to predict the performance of important highway assets such as culverts, barriers/guardrails, traffic signal systems, ditches, slopes, and shoulders. This could help the WSDOT Maintenance Division set performance targets that balance available funds, acceptable performance expectations, and maintenance division priorities, potentially preventing the need for expensive reactive maintenance.

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Data-Driven Assessment of Post-Earthquake Bridge Functionality and Regional Mobility 

Local, state, and federal engineers and emergency managers need reliable estimates of bridge performance after an earthquake so that they can plan pre-event mitigation, post-event response and mobility, and long-term recovery. This project provided improved predictions of the post-earthquake functionality of bridges in Western Washington following a Cascadia Subduction Zone magnitude-9.0 earthquake.

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Preparing for Traffic Signal Operations in a Multimodal Connected and Autonomous Vehicle Environment

Because WSDOT maintains 1,000 signalized intersections throughout the state, it is important for WSDOT to plan for connected and autonomous vehicle (CAV) technology and the information it generates, which may greatly help reduce congestion. However, currently there is no real-time, reliable, and multimodal approach for controlling the timing of signalized intersections in a connected or semi-connected arterial or urban street network. This project was intended to help WSDOT identify the technological issues and requirements of integrating connected vehicle hardware in existing traffic signal systems.

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Cost-Effective, Real-Time Visibility Detection System Based on Internet of Things and Computer Vision Technologies

Roadway safety can be significantly improved with the real-time collection of data on traffic, roadway surface, and environmental conditions and the efficient broadcasting of that information to road users. This project tested a mobile sensing unit and visibility detection system that would collect real-time traffic and environmental data to aid in object detection and tracking.

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Operations Performance Management Primer: From Performance Measures to Performance Management

With increased public scrutiny of transportation agency actions and limited funding, effective resource allocation is imperative. One tool to help departments of transportation make sound investment decisions, particularly for transportation systems management and operations, is the practice of operations performance measures and management (OPMM). This project developed a primer to introduce transportation practitioners to the principles and practices of OPMM.

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