Vehicle crashes in rural areas often happen at intersections. Transverse rumble strips placed before a stop sign can be an effective safety measure that warns drivers approaching an intersection. Recent research has provided an increased understanding of the most effective rumble strip designs and noise characteristics to help county traffic engineers decide when and where to deploy the strips.
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Personal Stories Illustrate Transportation Inequities in Minnesota
Transportation research is often about numbers. In a recent study, however, U of M researchers looked beyond the data to hear the transportation experiences of real people from underserved communities in Minnesota.
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New Project: Development of Process to Lower Global Warming Potential of Construction Materials
Advances in science of life cycle assessment (LCA) have set the stage to develop methods that meet global warming potential (GWP) reduction targets for construction materials, specifically, using instruments such as Environmental Product Declarations (EPD).
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Preparing for the Future of CAVs: Cybersecurity, Winter Weather Research
Connected and automated vehicles (CAVs) hold promise for improving transportation operations—but could also provide pathways for “malicious actors” to compromise vehicle security, said Rafael Stern, a U of M assistant professor, in a recent CTS webinar.
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New Project: Assessing a New Tool for Early Detection of Endangered Turtles on Proposed Transportation Projects
As turtle populations decline worldwide, increased protections (e.g. United States Endangered Species Act) yield increased regulatory burdens. As a consequence, monitoring of imperiled turtle species is imperative to understand both their extant distributions, but also to ensure regulatory compliance.
However, conventional methods for surveying turtles are frequently costly, time consuming, require taxonomic expertise, and unlikely to yield detections without repeated visits. And these burdens are exacerbated when sampling rare, threatened, or endangered (RTE) species. In these instances, innovative technological advances may overcome these limitations, ultimately streamlining monitoring.
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Evaluating Metrics and Performance to Advance Transportation Equity
Ensuring Minnesota’s transportation network does not create barriers or hardships for underserved or underrepresented communities is imperative. But knowing if the agency is planning and administering programs or projects equitably can be challenging to assess. New research suggests improved performance measures and strategies to support agency efforts to advance equity across the agency’s responsibilities.
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Evaluating MnDOT’s Turfgrass Seed Variety List and Approval Process
As climate conditions change and seed development processes advance, some grass varieties may perform better than others. New research will allow MnDOT to update its approved turfgrass list and ensure it remains up to date with the most effective varieties.
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Comparing the Cost-Effectiveness of Asphalt Binders for Local Roads
Asphalt pavements with polymer-modified binders (PMBs) perform better than pavements with unmodified asphalt binders. While pavements with PMBs may cost more initially, performance is improved in the long run. In a recent study, researchers compared the performance and life cycle costs of modified and unmodified binders and found that modified binders are more cost-effective, even for local low-volume roads.
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Future of Mobility: Urban air mobility
June 26, 2023
What’s next in transportation?
The Future of Mobility series collects the perspectives of top U researchers and other national experts. In 17 articles, the authors scan the horizon and reflect on critical transportation topics. Each article recommends action steps for public officials and policymakers.
CTS is highlighting the articles over the course of the year. This month, we explore two aviation-related articles: Safety and Urban Air Mobility by Demoz Gebre-Egziabher and Advanced Air Mobility by Susan Shaheen and Adam Cohen.
Autonomous aircraft and drones that can move people and goods in new ways are coming to our cities, writes Gebre-Egziabher. Often referred to as urban air mobility (UAM), these new transportation concepts are the flying equivalent of the autonomous car—and they raise just as many important questions about safety, use, and operations. Local communities and agencies are stakeholders that must have a say in safety and provide clear guidance to those developing technologies for UAM, he says.
Shaheen and Cohen write that aviation is undergoing rapid change around the world. A variety of technological advancements and industry investments in electrification, alternative fuels, automation, vertical take-off and landing aircraft, uncrewed aircraft systems, and air traffic management are enabling innovations in aircraft designs, services, and business models. They recommend driving the industry forward with an emphasis on social and environmental benefits, including humanitarian, aeromedical, and emergency response.
New Project: Assessing Methods to Mitigate Cognitive and Physical Declines That Influence Driving Performance of Older Drivers
Supporting older drivers to safely age in place as they experience age-related declines is important as many Minnesota drivers are reaching retirement age. Minnesotans, 65 years and older, are expected to represent 20% of the state population by 2025, with an overall increase of 122% from 2010-2040. While older drivers are generally safe drivers, those aged 75-85 face the highest risks from injury.
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