SCAG develops and applies state-of-the-art models to support SCAG’s planning programs. These models include:
- Trip-Based Transportation Model
- Activity-Based Model
- Heavy-Duty Truck Model
- Scenario Planning Model
- Land Use Model
- Growth Forecast & Allocation Models
- Air Quality Model
These major models and numerous sub-models are integrated into a comprehensive modeling framework commonly referred to as SCAG’s Regional Model (See Modeling Process). In addition, SCAG also maintains a robust subregional modeling and data service program that is essential to the analysis of many of the region’s projects and programs.
The primary functions of the Modeling and Forecasting Department include: a) providing modeling services for developing and implementing SCAG Regional Transportation Plan/Sustainable Communities Strategy (RTP/SCS) and the Federal Transportation Improvement Program (FTIP); b) developing and maintaining SCAG’s various analytical tools and data to more effectively forecast travel demand and estimate resulting air quality in the region; c) in collaboration with local governments, developing socioeconomic growth forecast and distribution as required for regional and local planning; d) providing member services through a robust subregional modeling and data distribution program; and e) collaborating with Caltrans, County Transportation Commissions, transit operators, air quality management agencies, and State and Federal transportation and environmental agencies on technical methodologies and modeling activities.