Seattle Traffic Counts by Study with Location and Summary Statistics

SDOT Traffic Counts group runs studies across Seattle to collect traffic volumes using pneumatic tubes and video systems. The data includes location information and summary statistics for each study, binned in 15-minute and 60-minute intervals in related tables. The dataset was last updated on March 22, 2026.

Use Cases

• Model traffic patterns based on location data and summary statistics.
• Analyze vehicle volume trends based on binned 15-minute and 60-minute counts.
• Match studies for detailed analysis using the provided study_id field.
• Classify traffic flow by direction using the TRAFFIC_FLOW_DIR_ID codes.

Strengths

• Includes standardized lane designation codes (e.g., Standard, Right Turn, Left Turn) for classification.
• Provides traffic flow direction identifiers (e.g., N, S, E, W, TOTAL) for analysis.
• Data is linked to more detailed tables via a study_id field.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

City of Seattle

Collection Method

Collected via pneumatic tubes and video systems by the SDOT Traffic Counts group.

Time Range

null

Freshness

Last updated 2026-03-22 03:45:50.951230; freshness should be verified.

Geography

Seattle, Washington, USA