Tag Archives: research

General research posts.

Tribal Pedestrian Safety

A new video developed by the Center for Transportation Studies highlights a multiyear study of pedestrian safety at reservations that was undertaken by U of M researchers and partners from seven Anishinaabe tribes. The work was sponsored by the Minnesota Department of Transportation (MnDOT).

Continue reading Tribal Pedestrian Safety

Best Practices for Protecting Equipment from Chemical Deicer Corrosion

Reprinted from Clear Roads News, October 2, 2024

In 2015, Clear Roads project 13-04 published a Manual of Best Practices to compile the various products agencies use as well as guidance for preventing corrosion on highway maintenance equipment.

Continue reading Best Practices for Protecting Equipment from Chemical Deicer Corrosion

Identifying Risk Factors for Deer-Vehicle Collisions

Deer-vehicle collisions are a significant safety hazard on Minnesota roads. While MnDOT strives to employ safety measures on roads at high risk for these collisions, identifying these areas can be challenging. Numerous variables impact where deer are more likely to be present near roads, and many collisions go unreported. A new tool estimates the risk levels—based on road type, geographical features, deer population and other characteristics—for each road segment in the state. In addition, a new method of estimating reporting rates will help MnDOT understand the extent of deer-vehicle collisions in a specific area.

Continue reading Identifying Risk Factors for Deer-Vehicle Collisions

New Project: Cost Benefit Analysis for Sustainable Energy Building Upgrades at Safety Rest Areas and Travel Information Centers

MnDOT manages over 50 large safety rest areas (SRAs) with several amenities and travel information centers (TICs) with expanded customer service. Many of the SRA and TIC buildings were built before the significant advancements in energy efficiency and building technology made in the past few decades.

Continue reading New Project: Cost Benefit Analysis for Sustainable Energy Building Upgrades at Safety Rest Areas and Travel Information Centers

TZD Traffic Safety Hotdish: A Roadmap for Traffic Safety Culture Research and the Road Ahead

Wednesday, July 17, 2024  
10:00 – 11:15 a.m. CDT

As states and localities adopt a vision of zero traffic fatalities, greater attention must be given to communication, collaboration, leveraging resources, and applying a systemic approach to traffic safety which requires a change in culture among road users and traffic safety agencies. This change in culture is tied to education, engineering, enforcement, and emergency services.

This free virtual event will highlight the Traffic Safety Culture Research Roadmap, recently released by the National Academies of Sciences, Engineering, and Medicine. The roadmap (Research Report 1091) presents a path forward to promote traffic safety culture among state departments of transportation and other transportation safety agencies.

Dr. Wes Kumfer, who led the creation of the roadmap, will review its development and contents. Jay Otto will share example projects and show how they fit into research on traffic safety culture. Join us to learn how you can identify traffic safety culture research needs and get insights to take back to your own organizational cultures!

The webinar is free to attend, but registration is required. Once you have registered, you will receive an email confirmation with a Zoom link. The link should not be shared with others; it is unique to you.

New Project: Long-Term Field Performance Evaluation of Chip Seals

Chip seals are an economical road surface treatment that MnDOT and counties use to enhance existing pavement performance and service life. A thin layer of asphalt emulsion sprayed on the pavement surface and mixed with aggregate chips can address minor pavement distresses and seal the pavement surface to reduce the impacts of further wear.

Continue reading New Project: Long-Term Field Performance Evaluation of Chip Seals

Dedicated transit lanes help attract riders, reduce carbon emissions

Public transit systems are instrumental for reducing auto travel and related greenhouse gas (GHG) emissions. But how much of a reduction depends in part on how transit lines operate—on dedicated right-of-way (ROW), in mixed traffic, or some variation.

Continue reading Dedicated transit lanes help attract riders, reduce carbon emissions

New Project: Species from Feces: A New Tool to Identify Bats in Culverts and on Bridges

Three bat species in Minnesota have been decimated due to white-nose syndrome. The northern long-eared bat is listed as endangered by the U.S. Fish and Wildlife Service, the tricolored bat listing is imminent, and the little brown bat listing is under consideration.

Continue reading New Project: Species from Feces: A New Tool to Identify Bats in Culverts and on Bridges

PFAS “Forever Chemicals” Can be Reduced in Highway Construction and Maintenance Projects

Taken from TRB Weekly – June 25, 2024

Per- and polyfluoroalkyl substances (PFAS) are a class of more than 6,000 contaminants of emerging concern that can harm both ecosystems and human health. These anthropogenic compounds contain carbon–fluorine bonds that make them stable and persistent in the environment, earning them the nickname “forever chemicals.”

Continue reading PFAS “Forever Chemicals” Can be Reduced in Highway Construction and Maintenance Projects

Evaluating the Traffic Safety Benefits of J-Turns in Minnesota

MnDOT traffic engineers are increasingly installing J-turn intersections on high-speed, multilane expressways to limit potential crash points. An analysis of crash data from intersections before and after the installation of J-turns demonstrated significant safety benefits from this alternative design. MnDOT researchers also explored crash history differences among J-turn intersections with varying characteristics. Consistent with the results from a previous study, this analysis found a clear decrease in fatal and other serious crashes after a J-turn was installed.

Continue reading Evaluating the Traffic Safety Benefits of J-Turns in Minnesota