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Pipeline overview

WAC turns upstream transportation feeds into map-ready records through a small number of repeatable steps.

Collection

WAC reads public transportation data from agencies and traveler-information platforms. Depending on the source, that may represent traffic cameras, road weather stations, or road-condition features.

Collection is designed to be conservative. The public docs identify the source family and the type of data used, but they avoid step-by-step extraction details.

Normalization

Each source describes transportation assets in its own way. WAC normalizes those records into shared concepts:

  • organizations that publish or steward data.
  • sources that represent upstream data feeds or services.
  • sites that represent real-world locations.
  • cameras or road-condition features shown on the map.
  • image records that track recent camera views where available.

Processing

Camera metadata and image freshness are processed separately. This lets WAC update location and attribution data without treating every image refresh as a new source definition.

Image processing converts recent camera views into map-friendly formats, stores thumbnails, and skips duplicate or placeholder imagery where possible.

Presentation

The main map uses the normalized records to show current camera and transportation context. WAC should be treated as a public-facing interpretation layer, not as the upstream system of record.