Publications

Activity Based Model

Demographic and Land Use Models

2050 Regional Growth Forecast Process and Model Documentation
6/2010 [PDF: 1MB]
The SANDAG forecasts comprise a complex set of discussions, assumptions, input data, computations, and model interactions. This report presents a basic description of the SANDAG forecast models used in the 2050 Regional Growth Forecast, including a general flow of information and some of the key inputs, assumptions, and computations for each of the components.

Automobile Operating Cost for the Second Round of Sustainable Communities Strategies
10/2014 [PDF: 448KB]

Transportation Model

4D Model Development
3/2011 [PDF: 1MB]
SANDAG and Parsons Brinckerhoff evaluated the existing SANDAG travel demand model for its sensitivity to land use-related transportation emission reduction strategies. The land use characteristics that relate to transportation and behavior are known as the “4Ds,” which stand for Diversity, Density, Design, and Destination Accessibility. The 4Ds measures are used to quantify urban characteristics such as compact mixed use areas associated with Smart Growth planning.

Development of a Truck Model for the San Diego Region
12/2008 [PDF: 4MB]
The extent and impact of freight movements on urban freight networks are coming under increased scrutiny by a number of stakeholders. The effort described in this report provides SANDAG with an urban freight model capable of addressing many of these issues.

Draft 2050 RTP Travel Demand Model Validation Report, 2011
6/2011 [PDF: 2MB]
SANDAG transportation and land use models are consistent with the models used throughout the country, and SANDAG along with the other major California metropolitan planning organizations are leading the development of the next generation of transportation, land use, and economic models.

Response to Move San Diego Letter Submitted at March 11, 2011 Board of Directors Meeting
5/2011 [PDF: 770KB]

Response to Shute, Mihaly & Weinberger LLC Letter Submitted at March 11, 2011 Board of Directors Meeting
4/2011 [PDF: 764KB]

SANDAG Transportation Model Sensitivity Analysis and Report - Revised
7/2011 [PDF: 1MB]
The objective of this report is to provide insight into the sensitivity and elasticity of the SANDAG four-step travel demand model in terms of policy and operational adjustment.

Vehicle Miles Traveled Calculations Using the SANDAG Regional Travel Demand Model - May 2013
5/2013 [PDF: 745KB]