Open Road Risk
  • Home
  • Project
    • Project overview
    • Current model status
    • AI-assisted development
  • Background
    • Metrics and methodology
    • Literature evidence register
  • Literature
    • Crash frequency models
    • Exposure and traffic volume
    • Spatial methods and network risk
    • Junctions and conflict structure
    • Severity modelling
    • Validation and metrics
    • Transferability and open data limits
  • Data Sources
    • Overview
    • STATS19 Collisions
    • OS Open Roads
    • AADF Traffic Counts
    • WebTRIS Sensors
    • Network Model GDB
  • Methodology
    • Methodology Overview
    • Joining the Datasets
    • Feature Engineering
    • Empirical Bayes Shrinkage
  • Exploratory Data Analysis
    • Collision EDA
    • Collision-Exposure Behaviour
    • Vehicle Mix Analysis
    • Road Curvature
    • Months and Days of Week
    • Traffic Volume EDA
    • OSM Coverage
  • Models
    • Modelling Approach
    • Stage 1a: Traffic Volume
    • Stage 1b: Time-Zone Profiles
    • Stage 2: Collision Risk Model
    • Facility Family Split
    • Model Inventory
  • Outputs
    • Top-risk map
  • Future Work

On this page

  • Overview
  • Planned Content

Handling COVID Years

Overview

COVID years affect both traffic volumes and collision counts. This page will explain how 2020 and 2021 are handled in cleaning, feature engineering, and model interpretation.

Note

Placeholder page.

Planned Content

  • Why COVID years are flagged.
  • Which models include or exclude COVID years.
  • Sensitivity checks for temporal trends.
  • Interpretation cautions for 2020-2021.

Open Road Risk

 

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