The National Highway Traffic Safety Administration Report  indicated that pedestrians account for 16% of the fatalities in traffic accidents on US roadways during 2017. Pedestrian fatalities in urban areas increased by 46% since 2008. The 2017 traffic safety facts indicated that the proportion of people killed "outside the vehicle" (pedestrians, cyclists, motorcyclists, and other non-occupants) increased from a low... more »
The Stop For Me campaign in St Paul has been proven successful to improve driver yielding rates at unsignalized intersections. Our most serious pedestrian crash problems are at signalized intersections. This study would look to expand the model that was studied for unsignalized intersections and apply it to signalized areas. Cities are interested in this approach and would be able to host this project in their City.
The sound made by standard rumble strips has a quality of life impact on the environment near locations where they are installed. These can be heard from over a mile away. The sound is alarming to residents and citizens that are near the roadway. Sinusoidal "mumble" or "quiet" rumble strips have been developed to mitigate the sound created by standard rumble strips. An alternative analysis needs to be performed to... more »
Engineering and enforcement solutions to encourage drivers yielding to pedestrians are guided by the speed and grade of the roadway. However, recommended yielding distances and driver compliance are negatively impacted by drivers who exceed the speed limit or by expectations of speed based on road designs or driving culture. An analysis of the relationship between driver yielding to pedestrians and speed and speeding... more »
With higher traffic volumes and greater restrictions on placing road tubes to do vehicle classification counts we need to find alternate ways to get vehicle class data. A new technology is being implemented at the California Department of Transportation that uses existing loops to obtain vehicle signatures to classify vehicles. The loop signature technology could be a huge innovation that can replace existing data collection... more »
Pedestrian fatalities on US roadways have been increasing in recent years. According to the National Highway Traffic Safety Administration, there were nearly 6,000 pedestrian deaths in traffic crashes in 2016, representing 16% of all traffic fatalities (NHTSA. Traffic Safety Facts. 2016 Data). This was an increase from 4,700 and 11% in 2007. In Minnesota, while other crash types of traffic fatalities have declined, deaths... more »
Pollinators such as native bees, including the federally-endangered rusty-patch bumble bee (Bombus affinis), and Monarch butterflies are at risk due to the loss of native habitats from increasing development, intensive agricultural practices, and greater use of pesticides. Roadside habitats, in particular, have grown in importance as they can provide habitat and act as migratory corridors. The objective of this project... more »
The first phase would summarize the current performance of roadways already built using tire derived aggregate (TDA). There are varying experiences from successful installations across the region and country regarding how much material is required to successfully surcharge the TDA before the embankment can be successfully surfaced. After completion of phase 1, phase 2 would be done if test sections are needed. This... more »
MnDOT has received complaints form motorcyclists, bicyclists, and pedestrians that large pavement markings are slippery. This study would look at the skid resistance of large pavement markings such as crosswalk blocks, turn arrows, and bike lanes. Are the pavement markings truly slippery? How does the skid resistance of pavement markings compare to the surrounding pavement? Is there a need to change our practices?
MnDOT's 'Minnesota GO' envisions a multimodal transportation system that maximizes the health of our economy. In small towns in Greater Minnesota, a MnDOT trunk highway is often the town's commercial main street. MnDOT plans and develops context sensitive projects that are performance-based, using a 'complete streets' approach. When completed, such small town projects have been found to benefit main street businesses,... more »
Statute directs MnDOT to reduce GHG emissions from the transportation sector; which is the largest sources of emissions in Minnesota. The state has examined corridor charging infrastructure for light-duty cars but has not studied charging needs for Medium- and Heavy-Duty (MD/HD) trucks, which have different needs than cars. Forecasts predict a large number of electric trucks will soon be used nationwide. We propose... more »
A new field moisture measurement device would be built based on prior research, trialed on construction projects, and a draft test standard developed. This new field moisture device would provide a fast and accurate method to determine the optimum moisture for compacting soils without laboratory Proctor testing or the use of a sand cone or nuclear density gauge. This new field test would determine if the construction... more »
Congestion on Minnesota's roads and highways reduces commuters' ability to reach destinations. These impacts are felt by all road users, whether traveling by car or by public transit. MnDOT leads the ongoing National Accessibility Evaluation pooled fund research project, which currently measures the impact congestion has on job access by car. Research towards a comparable transit measure can bring greater understanding... more »
Expand research started by University of Minnesota Twin Cities campus Remote Sensing Lab to automatically extract footprints of buildings, roadway edges, and other features from aerial imagery (photography) and laser generated point clouds, that currently require a manual identification and interaction during photogrammetric mapping.
A "Buy Clean MN" bill was proposed in 2019 legislature to require MnDOT to use materials with the lowest Global Warming Potential (GWP). The language was copied from a recently passed bill in CA that requires use of lowest GWP materials based on a life cycle assessment of emissions and uses Environmental Product Declarations (EPDs) to verify results. MnDOT has targets to reduce construction emissions and we have been... more »