Advancing winter road maintenance: An AI-driven web platform for real-time road condition monitoring and spatial analysis
Bibliographic record
Abstract
Winter weather conditions pose significant challenges for transportation agencies, impacting road safety, traffic flow, and winter road maintenance (WRM) operations. Traditional methods for monitoring road surface conditions (RSCs) often involve time-consuming processes that require significant personnel. To address these challenges and maximize the utility of existing infrastructure, this paper presents a web-based system for real-time RSC monitoring. The system combines convolutional neural networks (CNNs) for RSC classification, a novel Nested Indicator Kriging (NIK) method for spatial interpolation, and modern web technologies to provide an intuitive interface. The system seamlessly integrates CNN models for real-time classifications using automated vehicle location (AVL) and road weather information system (RWIS) imagery. The NIK method enhances spatial coverage by classifying multiple RSC categories through two layers: the first identifies basic road conditions as bare or non-bare, while the second discriminates between more complex states, such as partially or fully snow-covered. Validated through simulations using historical data, the integrated AVL CNN model achieved a training accuracy of 99.89% and a validation accuracy of 94.62% during training, while the RWIS model reached a maximum accuracy of 98.46% and an F1 Score of 97.19%. Furthermore, the NIK method showed cross-validation accuracies averaging 73.5% for the first layer, and 86.0% for the second layer. This unified system represents an advancement in WRM decision support by automating RSC classifications and closing gaps in spatial data coverage, thus improving the efficiency and sustainability of operations and enhancing the ability of safety professionals and operators to respond to roadway hazards in real-time.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.002 | 0.002 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.008 | 0.006 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".