Problem

With the adoption of chloride deicer programs, the need to understand how those runoff chlorides migrate into the adjacent environment has presented an issue for planners in many organizations. The ability to understand how chloride deicers move, disperse in, or migrate through, varying soil types would help to identify sensitive areas that may need adjustment to chloride deployment rates to help protect public and private aquifers.

Objectives

The goal of this project is to provide winter maintenance teams with a thorough understanding of how sodium chloride, calcium chloride and magnesium chloride migrate through different soil textures – and how agricultural-based inhibitors affect that process.

Expected Results

The deliverables from this project – specifically a series of one-page fact sheets based on the results of a controlled testing program – will assist agencies in developing localized maintenance treatment plans.

Problem

How often does a snowplow cycle through a given point on a highway? This is a question that changes based on weather and road conditions, but a long term average of this data would be an interesting and useful metric for snow and ice performance evaluation, route optimization, and resource allocation.

Objectives

The goal of this project is to develop a methodology to calculate plow cycle times, considering various relevant factors. This methodology will then be used to create the framework for a visualization tool that agencies can format with their own electronic data.

Expected Results

By developing a methodology for this calculation and an online tool to visualize the data, agencies will have the ability to track snowplows in real-time and make operational adjustments as needed to maximize efficiency. Additionally, agencies will have greater insight for post-storm analyses, performance evaluations, route optimization strategies, and resource allocation efforts while leveraging data they likely already collect during the course of their routine winter maintenance activities.

Problem

Corrosion to maintenance equipment resulting from the use of chloride deicers is a challenge for transportation agencies across North America. While there were many products and much anecdotal guidance for the prevention of corrosion, there was not a consolidated guide that combined all of the available knowledge on corrosion prevention for use by snow and ice control practitioners. In May 2015, Clear Roads published a Manual of Best Practices, which provided guidelines for corrosion management on highway maintenance equipment.

Objectives

The goal of this project is to update and expand Chapter 5.4 of the 2015 Clear Roads Project 13-04 publication, Manual of Best Practices for the Prevention of Corrosion on Vehicles and Equipment used by Transportation Agencies for Snow and Ice Control, by looking at the various coatings available on the market, from 2013 to the present, and conduct side-by-side comparison testing based on the application method.

Expected Results

The product testing conducted for this project will provide a more robust evaluation of the performance of anti-corrosion coatings that is necessary to provide agencies with the information needed to select suitable anti-corrosion coatings for their valuable equipment.

Problem

Transportation agencies routinely use chlorides in their winter maintenance practices, which can contaminate road-side wells and waterways. Because of these potential adverse effects, agencies would like to better understand the range of non-chloride-based deicers that could serve as viable alternatives.

Objectives

To collect and synthesize available information about non-chloride deicing products from available research and present the information as a comparison to chloride-based deicers in educational primers and product information sheets. Using the Mechanical Rocker Test developed by University of Nebraska / Nebraska DOT, investigators will provide an examination and documentation of the performance of selected non-chloride deicers from the Clear Roads Qualified Products List (QPL) that have not yet been effectively tested.

Expected Results

From this environmental data, investigators will recommend environmental testing standards to be added to Test Methods 15 through 20 of Clear Roads Guidance Document for Material Qualified Products List, Specifications, Test Methods, and Product Purchasing, which address Toxicity, Ammonia – Nitrogen, Total Kjeldahl Nitrogen, Biological Oxygen Demand and Chemical Oxygen Demand tests.

Problem

The Clear Roads project Evaluation of SSI and WSI Variables developed a step-by-step guide and flowchart tool to help agencies identify or develop severity index methods that fit their needs and their available data sources. The final report represents the most comprehensive work on this complicated topic. However, the complexity and size of the report present a hurdle to managers’ and practitioners’ ability to understand these findings and apply them to their operations. This important topic is an increasing concern among snow and ice managers as they attempt to develop accurate level of service measurements.

Objectives

The goal of this dissemination and implementation project is to develop Clear Roads training modules for three general audiences, including division directors, snow and ice managers, and supervisors.

Expected Results

The outcome of this project will be detailed training modules that synthesize the material from CR 18-03 into 30- to 60-minute segments tailored to the three target audiences. These modules would include audiovisual materials, discussion topics, and interactive exercises (knowledge checks) required to provide complete training on this topic.

Problem

Many agencies have snowplows capable of gathering pavement friction and other data as they travel along their routes, but most do not use that information to make operational adjustments in real time.

Objectives

The goal of this project is to gain a more complete understanding of how, and for what purpose, various transportation agencies put friction data to use within their own programs.

Expected Results

This project will provide winter maintenance teams with an algorithm or decision matrix that incorporates pavement friction and other data to advise the appropriate type and application rate of deicing materials in real time.

Problem

As renewable energy becomes more cost-effective and commonplace, agencies may choose to begin replacing their winter maintenance vehicles and equipment with a fleet that has a smaller carbon footprint. There are, however, a number of issues that transportation agencies with winter maintenance programs should consider before converting an existing diesel-fueled winter maintenance fleet to one powered by electric vehicle technologies (EVT) or alternative fuels.

Objectives

The goal of this project is to provide agencies that rely on diesel-powered winter maintenance fleets with a thorough understanding of the available technologies and related operational considerations that would be impacted by a transition to a fleet powered by EVT or alternative fuels.

Expected Results

Investigators will research EVT as well as identify what alternative fuels are viable for use in winter maintenance vehicles and heavy equipment, and a comparison of the benefits and challenges each energy source offers. This information will form the basis for a synthesis report that agencies can reference in their decision-making process.

Problem

The effects of deicers on environmental resources are varied and complex. The impacts to sensitive species, protected resources, and human exposure are important factors when considering the appropriate use of deicers on roadways and must be balanced with public safety and expectations. With the difficulty in identifying environmentally sensitive corridors, states are unable to assign the proper equipment and apply chemicals at the appropriate rates to avoid further environmental degradation of both surface and ground water with chloride and sodium.

Objectives

The goal of this project is to improve operational planning to help agencies identify the roadway segments where vulnerable environmental resources may be impacted by snow and ice control activities.

Expected Results

This project will develop a geospatial tool that incorporates data about roadways, topography, hydrology, and ecology to model the impact of de-icing chemical application on the local environment. This information can then be used by maintenance personnel to adjust material application to balance mobility and environmental concerns.

Problem

Each state has its own salt shed design; in some states four to five varieties are used. In many cases these sheds are designed for each location given a specific budget. Many facilities are not designed to the level they need to be in terms of quality as they do not effectively contain the salt they are designed to store.

Objectives

The goal of this project is to develop a set of three scalable salt shed designs that can be used as a template to meet the needs of a variety of sites throughout Clear Roads member states. The designs will take into account existing building codes and state and federal regulations associated with environmental and related concerns.

Expected Results

The template should provide a set of three scalable designs appropriate for a range of storage capacities. With scalable structural components, the designs would provide a basic template for member states to use as a starting point for further design modifications and for bidding for shelter construction.

Problem

Preliminary testing has indicated that the ice melting capacity of various deicing products may vary significantly, even within specific deicing product categories. In addition, states’ processes for procuring deicing materials limit competition, are subjective on performance, and can become increasingly burdensome for lab, procurement, and management staff.

Objectives

To provide transportation agencies with an objective, repeatable test procedure for measuring the ice melting capacity of deicers.

Expected Results

Clear Roads wishes to standardize product testing to help states meet level of service requirements with the lowest possible procurement costs. In this project, the Mechanical Rocker Test Procedure, developed by Nebraska DOT, will be evaluated for use as a national standard.

Interim Webinar was conducted on October 11, 2022.