Seattle Traffic Signal Assemblies and Accessible Pedestrian Signals

Traffic signal assemblies maintained by the Seattle Department of Transportation. The dataset, also referenced as Accessible Pedestrian Signals, is refreshed daily and includes a feature class named SDOT.V_SIGNALS. It was last updated on March 22, 2026.

Use Cases

• Mapping traffic signal locations for urban infrastructure inventory based on the geospatial nature of the data.
• Analyzing pedestrian accessibility based on the reference to Accessible Pedestrian Signals.
• Monitoring asset status for maintenance planning based on the mention of CURRENT_STATUS field queries.
• Optimizing traffic flow patterns based on the described purpose of traffic signals to minimize conflicts.

Strengths

• Data is refreshed daily, suggesting regular updates.
• Includes a recommended definition query for filtering by CURRENT_STATUS.
• Available in multiple formats including CSV, JSON, and geospatial formats like 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

City of Seattle, Seattle Department of Transportation.

Collection Method

Likely collected and maintained as part of municipal infrastructure management.

Time Range

null

Freshness

Daily refresh cycle; last updated 2026-03-22.

Geography

City of Seattle, Washington, USA.