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SANDAG maintains multiple ABM software versions, including ABM1 for San Diego Forward: The Regional Plan adopted by SANDAG Board of Directors in 10/2015, ABM2 for the SANDAG 2019 Federal Regional Transportation Plan adopted in 10/2019, and ABM2+ for ongoing applications in the San Diego Forward: The 2021 Regional Plan (2021 Regional Plan). All the above ABM versions are CT-RAMP models, please refer to this WIKI page for model design, data dictionaries, software, calibration and valiation, and sensitivity testing reports.

SANDAG is currently working on developing ABM3, a ActivitySim based modeling platform, for the 2025 Regional Plan. As an ActivitySim member, SANDAG worked with the consortium and developed three ActivitySim prototypes (1-zone, 2-zone, and 3-zone) using SANDAG's data. Additionally, a San Diego specific special market model-Crossborder Model (CBM) software has been converted from CT-RAMP to ActivitySim. These are the first two steps of transitioning SANDAG's ABM from CT-RAMP to ActivitySim.

SANDAG’s ABM source-control follows a trunk-based model (TBD) model:

• Developers collaborate on code in a single branch called ‘trunk’:
  • ABM1_TRUNK for ABM1
  • ABM2_TRUNK for ABM2 & ABM2+
  • asim-cross-border for CBM: ActivitySim-based
• For each ABM version there is a release branch that should not receive continued development work.
  • Release 13.3.3 for ABM1
  • Release 14.1.1 for ABM2
  • Release 14.2.2 for ABM2+
• In some cases, short-lived feature branches are allowed. However, once codes on feature branch compiles and passes all tests, they should be merged to trunk and the feature branch should be deleted.

• Download Eclipse
• Install Maven (m2e) if needed (check if it is already installed via Windows + Preferences)
• File + Import + Maven + Existing Maven Projects and select pom.xml
• Eclipse will import the SANDAG ABM maven project, which includes downloading the dependencies from SANDAG's svn server
• Right click pom.xml and select Run As + Maven with the goal clean package and profile name and then check "skip tests"
• The outputs are here: target\SANDAG CT-RAMP Activity Based Model

Dependencies are download to Windows + Preferences + Maven + User Settings + Local Repository. Make sure you have access to SANDAG's SVN and Nexus servers (via VPN with the Nexus port open).