Daily Mobility Data

Overview

Replica provides nationwide, daily estimates of vehicle miles traveled (VMT) and network link volume counts for private auto, commercial, and on-demand vehicles. Data is available from January 2025 onward and is refreshed weekly.

This dataset supports analysis at finer spatial and temporal resolutions than seasonally released products, enabling near real-time insights into travel behavior and network performance.

Methodology

The model estimates daily traffic volumes by combining typical nationwide travel patterns with observed day-to-day changes from multiple data sources. Observed counts are scaled to represent total daily link volumes based on each provider’s coverage, location type, and historical relationships between observed and total network activity.

Built-in checks ensure that day-to-day variability remains realistic while still capturing the effects of major events such as holidays, weather disruptions, or large gatherings.

Daily volumes are then distributed across hourly intervals while considering the expected traffic assignment and the travel demand variation through the day. Drawing on multiple data sources helps maintain both spatial and temporal consistency, resulting in reliable and responsive traffic estimates across the nationwide network.