Seattle Traffic Detectors Maintained by SDOT

Traffic detectors maintained by the Seattle Department of Transportation. The dataset is updated daily and belongs to the TMC.TrafDetectors feature class. It is published by the City of Seattle and was last updated on March 22, 2026.

Use Cases

• Model real-time traffic patterns based on detector locations.
• Analyze transportation infrastructure density and placement.
• Integrate with GIS systems for city planning based on the geospatial feature class.
• Monitor detector network status and coverage based on daily refresh cycles.

Strengths

• Daily refresh cycle ensures data is current.
• Published by the authoritative City of Seattle Department of Transportation.
• Available in multiple formats including CSV, JSON, and geospatial formats like KML and GeoPackage.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Seattle Department of Transportation (SDOT)

Collection Method

Likely collected from operational traffic management systems.

Time Range

Temporal coverage is not specified.

Freshness

Daily

Geography

City of Seattle