Minnesota Local Road Research Board
by LRRB
This project will develop and deliver associated End-User Product(s) considering engineering and policy tools as element(s) for a process to revert low volume paved roads back to gravel lending itself […]
by LRRB
In 1993, MN passed a law exempting Implements of Husbandry (IOH) from size, weight and load restrictions. Over the last two decades, as farming practices have changed from family to […]
by LRRB
The use of Recycled Asphalt Pavement (RAP) is allowed and encouraged in the construction of new roadways and pavements in Minnesota. Its use reduces cost and environmental impacts of road […]
by LRRB
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.
by LRRB
This handbook summarizes common snow and ice control tools and serve as an introduction to the field of winter maintenance for operators and managers.
by LRRB
Multi-lane roundabouts can be an effective intersection control and reduce injury crashes if the design and layout is carefully considered. Past experience has indicated that failure to yield and improper […]
by LRRB
This instructional video is meant to help understand the methodology used to develop a spreadsheet tool, as well as how to use it in determining what hours of the day […]
by LRRB
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.
by LRRB
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.
by LRRB
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.
by LRRB
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.
by LRRB
In this video, we address common roundabout myths and demonstrate why they are a viable alternative for intersection traffic control.
by LRRB
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.
by LRRB
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.
by LRRB
The documents that emerged from this research will help local agencies identify the appropriate work zone layout for low-volume roads based on the maintenance activity that will be performed.
by LRRB
The Minnesota Local Road Research Board (LRRB) recently announced its fiscal year 2017 projects. Together with the Minnesota Department of Transportation’s Transportation Research Innovation Group (TRIG), the two organizations selected […]
by LRRB
The LRRB recently developed a spreadsheet tool to help local agencies determine which hours of the day to consider using flashing yellow arrow (FYA) phasing. An instructional video has now been published to help agencies understand the methodology used to develop the spreadsheet, as well as how to use it.
by LRRB
The LRRB has produced a brochure that provides background information on the history of implements of husbandry; summarizes neighboring states’ weight restrictions; and provides links to recent research data on the damaging effects that large machinery has on pavements.
by LRRB
A new guidebook is intended to help engineers select and deploy LED stop signs and ICWS at stop-controlled intersections.
by LRRB
This task aimed to integrate best practices from local, state and federal safety partners and help Minnesota cities and counties effectively address driver behavior.