AGPS data model update

The agps data source now uses an upgraded model to calculate volume for all data beginning in 2019 and onward. This new model delivers:

• Enhanced performance, particularly on low-volume roadways
• Improved differentiation between weekday and weekend traffic trends
• More stable historical comparisons

This model will be used going forward for all new data releases.

New OSM Vintage parameter

Queries using the agps data source must now specify the OpenStreetMap (OSM) vintage. The selected vintage determines the road network geometry used to calculate metrics. You can specify the osm_vintage parameter for the Segment Count, Geometry, and Metrics endpoints. The following vintages are available:

• 202302: OSM snapshot from February 2023, use for dates through December 2024
• 202501: OSM snapshot from January 2025, use for dates from January 2025 onward

For more information, see Defining Geometry.

New geometry fields

You can now define geographies with the following new fields:

• taz_id: 2020 Traffic Analysis Zone (TAZ) ID
• places_2020: 2020 Census FIPS Place ID

For more information, see Defining Geometry.