The Atlanta Regional Commission Travel Demand Model is a technical tool to assist in the development of the Regional Transportation Plan (RTP) and the policy decision making process. The Travel Demand Model utilizes a traditional four-step trip-based model process consisting of trip generation, trip distribution, mode choice and trip assignment for the 20-county non-attainment area.
Model Data
Data and files from the ARC Travel Demand Model are distributed to the public via FTP and are available on request via e-mail at modeling@atlantaregional.com.
Other Modeling Activities
Activity-Based/Tour-Based Model
Beginning in 2010, a dual-track method will be utilized to maintain the 4-step trip-based model and the implementation of an Activity-Based Model process based on CT-RAMP (Coordinated Travel Regional Activity-Based Modeling Platform). The CT-RAMP Activity-Based model addresses both household-level and person-level travel choices including intra-household interactions between household members, as compared to other more simplified Activity-Based Models where all travel choices are modeled at the person level, independently of choices made by other household members within the household. The Activity-Based Model reflects and responds to detailed demographic information, including household structure, aging, income changes, and other key attributes.
Learn more about the ARC Activity-Based Model and CT-RAMP:
Population Synthesizer (PopSyn)
A population synthesizer was developed to enable proper demographic inputs and land use information into the travel demand model. Through the use of census data and land use model outputs, a detailed synthetic population was developed. A record for each household in the region and record for each person in the household are included.
Production Exchange Consumption Allocation System (PECAS)
Work is currently underway in the development of the Atlanta region’s population and employment forecast model utilizing PECAS.
Emissions Modeling
Coming soon.
Peer Reviews
Peer reviews have been conducted to assess the state of the ARC travel demand model and appropriate modeling practices.