The Local Road Research Board publishes a wide range of transportation-related educational materials. For research reports, go here.
Contact Sandy McCully at 651-366-3768 for more information.
This guidebook is intended to help engineers select and deploy LED stop signs and ICWS at STOP-controlled intersections. These safety strategies should be included for consideration along with other safety improvements detailed in the TEM and Traffic Safety Fundamentals Handbook.
The purpose of this Web tool is to assist the engineering community in the design of hot mix asphalt (HMA) pavements. The system archives information for others to build upon with the use of other test sections or performance or material testing databases being developed within the state.
This Excel-based tool calculates the impact of a variety of heavy vehicles on local asphalt roads. The tool will help local agencies make informed decisions when developments such as construction, distribution centers or hauling routes create an unexpected increase in heavy vehicle traffic on a temporary or permanent basis, and it will aid in planning if these traffic increases can be predicted.
Over a period of many years, LRRB and FHWA Investigations have produced information relating to selecting the most effective Pavement Rehabilitation Strategies. In addition to these efforts, the FHWA has produced training modules incorporating Pavement Rehabilitation Selection methods. The objective of this task was to synthesize these efforts and develop a training module summarizing the best practices suitable for use by local agencies in Minnesota.
This resource will help local agencies without a Pavement Management System to evaluate, select, and justify the purchase and operational costs of a PMS; additionally, it will help local agencies who have a PMS to better use and enhance their capabilities.
This project produced an interactive guide that helps local agencies evaluate their transportation network preservation needs, communicate these needs to elected officials and the public, and select and implement strategies to address funding gaps.
This handbook aims to reduce the number of severe crashes on the state’s highway system by helping agencies design, operate, and maintain their systems of roads and highways. A spinoff from the ongoing County Road Safety Plan efforts, this resource contains traffic safety strategies, sample policies and best practices information to support agencies as they implement their own policies.
The purpose of this field handbook is to help promote the understanding of the tools, best practices, and limitations for snow and ice control. The handbook will also help you understand when to use and when not to use these tools and practices.
The handbook is intended to guide local governments about recommended sign maintenance methods that will help them meet FHWA’s adopted retroreflectivity performance measures and implementation deadlines.
In this video, we address common roundabout myths and demonstrate why they are a viable alternative for intersection traffic control.
This video, shot near Thief River Falls, Minnesota, shows a comparison between traditional rumble strip designs and the newer sinusoidal rumble strips (a.k.a. “mumble strips”). Researchers are investigating whether sinusoidal rumble strip designs, which are much quieter, are effective enough to combat drowsy or inattentive driving.
This video accompanies a spreadsheet tool, which aims to assist local agencies in determining which hours of the day to consider using flashing yellow arrow (FYA) phasing.
A new guidebook is intended to help engineers select and deploy LED stop signs and ICWS at stop-controlled intersections.
This video gives an overview of the different types of chemicals available to public works entities to combat the toughest Minnesota winter conditions.
The manual will assist communities and planners to not only select the best trees for their available planting sites, but to use specific principles of street tree design to most effectively create public green spaces, positively affect traffic patterns, and create healthy living spaces.
In this video, researcher Howard Preston explains what MnDOT is doing to learn the life expectancy of traffic signs.
Ever wonder why your road isn’t being repaired? This Minnesota Local Road Research Board video explains why roads go bad and why sometimes the worst roads aren’t fixed first.
In this video, pedestrians, cyclists, and motorists in Minnesota identify some common misconceptions about bike lanes.
Watch this video to see MnDOT-funded researchers transform parking lots into driving tracks to study the effects of weather and vehicle traffic on different deicing treatments.
A short look at what the Minnesota Local Road Research Board does, and how it benefits city and county engineers, officials, and citizens.