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Clear Roads Selects 2021 Research Projects

The Clear Roads Technical Advisory Committee met April 13-15 to select research projects for 2021 funding. The TAC selected seven new projects: Grip Sensor Technology and Salt Applications Best Practices for Protecting DOT Equipment from the Corrosive Effects of Chemical Deicers (Update to CR 13-04) Efficacy and Environmental Impact of Non-Chloride Deicers Training Module Development […]

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New Clear Roads Research: Tools and Strategies for Developing Severity Indexes

Many agencies use storm severity indexes and winter severity indexes to make comparisons between storms and across multiple winter seasons. But developing an effective severity index can be challenging due to the multitude of variables involved and the availability and quality of data.  To help agencies find the right fit, a recent Clear Roads research […]

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iowa snow fence

Illinois Examines Snow Fence Design, Cost-Effectiveness

By preventing blowing snow from reaching the roadway, snow fences have proven to be an important tool for many state DOTs. In Illinois, two recent studies are helping IDOT refine its approach to snow fence design and better assess the fences’ cost-effectiveness. A new benefit-cost analysis tool will help IDOT select locations for three fence […]

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New Clear Roads Research: Standard Specifications for Carbide Plow Blades

A recent Clear Roads research project developed standard procurement specifications for carbide-insert plow blades that any agency can download and use. Designed to help agencies acquire high-quality, long-lasting blades that consistently perform well on the road, the specifications also provide thorough guidance for independent lab testing and inspection of carbide inserts. Download the specifications and […]

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Iowa Adds to Popular Winter Operations Training Videos

A step-by-step guide to spreader calibration is the latest addition to Iowa DOT’s popular Winter Operations Training video series. The 10-minute calibration video includes demonstrations on both granular and liquid equipment. Updated in 2020, Iowa DOT’s training videos have long been a valuable resource for winter maintenance programs in Iowa and beyond. The series includes […]

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Minnesota DOT Tests Snowplow-Activated Warning Signs

Drivers on a stretch of Interstate 35 in southern Minnesota received advance warning this winter when snowplows were working nearby. In an effort to reduce crashes, Minnesota DOT pilot-tested technology that uses highway message signs to let motorists know when slow-moving plows are ahead on the highway. Ten snowplows were outfitted with the technology, which […]

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New Clear Roads Synthesis Report: Inventory and Use of Salt Spreading Systems

A recent Clear Roads synthesis project surveyed state DOTs about which spreader systems they use, what features the systems have, and how satisfied the agencies are with their systems. Price, ease of use, and specific features were important factors in spreader selection, and most respondents reported being satisfied with their spreaders. The synthesis provides detail […]

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Appearance of coupons and solutions of Distilled Water (left) and a 3% Salt solution (right).

Clear Roads QPL Featured on SICOP Talks Winter Ops Podcast

Clear Roads’ Qualified Products List (QPL) takes center stage in Episode 45 of AASHTO’s SICOP Talks Winter Ops podcast. Host Rick Nelson talks with Patti Caswell of Oregon DOT about the history and the future of the QPL, which was created by the Pacific Northwest Snowfighters consortium as a way to collectively test deicing chemicals […]

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New TRB Resource: Preparing for Winter Weather

If you’re looking for the latest research and guidance on deicers, extreme weather, or any other aspect of winter operations, be sure to check the Transportation Research Board. A recent TRB article serves as a guide to the organization’s winter-related resources, including: NCHRP Research Report 889: Performance Measures in Snow and Ice Control Operations NCHRP […]

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DelDOT plow

Plow Route Optimization Increases Efficiency for Delaware DOT

An ongoing plow route optimization effort at Delaware DOT is yielding benefits for state residents. By optimizing selected routes for mileage efficiency, the department has been able to reduce snow removal service times and improve its level of service. DelDOT began its route optimization work in 2019 following a 2018 research project, and the agency […]

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