Utah DOT weather responsive traveler information system.

Gopalakrishna, Deepak; Cluett, Chris; Kitchener, Fred; Sturges, Leigh · 2013 · ROSA P / United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office

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Summary

This report documents the implementation and evaluation of a Weather Responsive Traveler Information (Wx-TINFO) system developed by the Utah Department of Transportation (UDOT) in partnership with the Federal Highway Administration’s Road Weather Management Program. The project addresses the need for proactive traffic management during adverse weather conditions by improving the timeliness, accuracy, and spatial coverage of road weather data provided to both traffic operators and the traveling public. Specifically, the initiative aimed to enhance UDOT’s existing sophisticated Traffic Operations Center capabilities by increasing forecast frequency from six-hour to three-hour increments, expanding coverage to additional state routes, and introducing a citizen reporting system to fill gaps in observational data. The implementation focused on deploying a citizen reporter (CR) program during the 2012–2013 winter season. UDOT identified 143 road segments categorized as primary, secondary, or tertiary based on existing data gaps, with primary segments in rural areas prioritized due to minimal existing coverage. Fifty-six UDOT employees were trained as citizen reporters and equipped with a dedicated smartphone application to submit real-time road condition observations. The system was designed to integrate these reports into UDOT’s forecasting models and dissemination channels, including the UDOT Traffic website, 511 phone system, and smartphone applications. The evaluation assessed five hypotheses regarding the system’s ability to fill observational gaps, report accuracy, operational benefits for UDOT staff, public utility, and public satisfaction. The results indicated that the citizen reporting system was highly effective. Of the 56 trained reporters, 31 actively submitted a total of 607 reports, with reporting frequency significantly higher on storm days (8.5 reports per day) compared to non-storm days (2.7 reports per day). The accuracy of these reports exceeded 99%, and 71% were submitted with little to no delay between observation and submission, ensuring data currency. Internally, the reports provided increased situational awareness for meteorologists and operators, boosting confidence in road weather forecasts. Public response was positive; surveys revealed that 83% to 95% of respondents were satisfied with the enhanced forecasts and digital tools. While most reports originated from tertiary (urban) segments due to commuter patterns, the data successfully supplemented existing information sources. The study concludes that citizen reporting is a viable, cost-effective strategy for enhancing road weather management and meeting safety and mobility goals. The findings suggest that expanding the program to include the general public and optimizing recruitment strategies could further reduce data gaps, particularly on rural primary routes. The report recommends that UDOT continue to refine reporter training and performance monitoring to maximize the utility of citizen-generated data. Ultimately, this implementation serves as a model for other state departments of transportation seeking to integrate proactive, weather-responsive traveler information systems into their daily operations.

Key finding

Citizen reports submitted by UDOT employees were over 99% accurate and significantly improved situational awareness for traffic operations center meteorologists.

Methodology

field_study

Sample size: 607

Provenance

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