The Complete Streets approach to roadway design uses site characteristics to create a safer, more accessible environment for all road users. New research demonstrates that roadway design features have a measurable impact on driving speeds. The development of speed reduction factors (SRFs) that estimate the impact of road features on speed reduction provides a data-driven approach to highway design.
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Clear Roads Featured at National Briefing
September 4, 2024
Reprinted from Clear Roads News
Last month, AASHTO’s Winter Weather Management Technical Services Program, Maintenance Committee and Maintenance Operations Technical Working Group jointly held its 5th National Briefing on Winter Maintenance and Road Weather to showcase the activities of the various organizations dedicated to winter and year-round transportation maintenance.
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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.
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Using AVL/GPS Telematics to Optimize Snowplowing
Republished from MnLTAP News, February 2, 2022.
Automatic vehicle location (AVL) systems using GPS are creating opportunities for local agencies to improve their operations even in real time. A five-page guide and a video from the LRRB highlight the features and benefits of such systems for snowplowing.
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New Project: Vulnerability Assessments of Critical Slope Areas Using Advanced Monitoring Techniques
MnDOT continues working on systematically and proactively assessing stability of slopes along its highway system. Efforts are aimed at minimizing the potential for slope failures that could result in threats to public safety and costly repairs.
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Staffing up: Resources to Grow Your Roadway Maintenance Workforce
Local transportation agencies in Minnesota continue to face worker shortages as many struggle to hire and retain employees. Recognizing this challenge, the Minnesota Local Road Research Board partnered with Minnesota LTAP to develop marketing resources for local transportation agencies to use to recruit and retain roadway maintenance workers.
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Social Outcomes Improve by Incorporating Arts and Culture into Transportation Planning
Historically, transportation projects have had a disproportionately negative effect on BIPOC (Black, Indigenous and people of color) and low-income communities. Today, state departments of transportation (DOTs) may be able to mitigate these negative effects by reaching out to these communities and incorporating their ideas and feedback into transportation planning. Local artists and culture bearers could serve as ambassadors for these communities by participating in the transportation planning process based on their creative placemaking ideas and connection to the community.
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New Project: Use of MNCORS to Support AV Operations in Rural Minnesota
Autonomous vehicles (AVs) have infrastructure requirements such as lane lines, centerlines and intersection signs to guide camera-enabled steering control functions. But many rural roads do not have lane markings or are unpaved, and intersections might be missing components to guide AVs.
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Introducing a New Red-Light Running Warning System that Can Potentially Reduce Human Errors at Intersections
Red light violations remain a prominent issue and high contributor to serious crashes and casualties at signalized intersections. An ongoing research project, funded by the Local Road Research Board, and Federal Highway Administration (FHWA) State Transportation Innovation Council (STIC) Incentive program, is developing and testing a warning system that signals drivers as they approach a red light and prompts them to decelerate.
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Clear Roads Selects 2024 Research Projects
At its 2024 spring meeting, the Clear Roads Technical Advisory Committee reviewed new research proposals and selected projects to fund.
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Crossroads 