SANDAG collects and maintains a wide range of traffic and transit data to help transit analysts and transportation planners better understand the region's current and future transportation needs.
Average Daily Traffic Volumes
Traffic count data for significant roadways and all Caltrans routes in the San Diego region.
Transportation Forecast Information Center
Access forecasted average weekday traffic volumes for freeways, freeway ramps, and major roads. Traffic volumes are available for 10-year time increments from 2000 to 2030.