SCAG Sub-regional Model Development Tool (SMDT) TRB Planning Applications Conference May 17, 2017 Hao Cheng, SCAG Jim Lam, Caliper

Purpose To save time and cost on sub-regional model development To promote collaboration and model consistency in SCAG Region To enhance modeling support among SCAG and member agencies

Four Components of SMDT Defining Subregion Data Conversion Tool SED Estimation Tool Sub-regional Model Model add-in in TransCAD

Defining Subregions Input A combination of Regional model zones and subregion zones with allocation percentages

Data Conversion Tool Zones are disaggregated inside focus area Keynotes on output Zones are aggregated outside focus area Zones are disaggregated inside focus area

Data Conversion Tool Interface Converted data saved in a new folder Options to import local street links and pre-defined centroid connectors into regional network

Sub-regional Model Built on TransCAD platform as an add-in The models are focused model which only focuses on zones and trips that start or end in the focused area. Model results are frozen outside of the focus area.

Sub-regional Model VMT Summary *Ventura County is the focused area

Sub-regional Model Implementation Ventura, Imperial, San Bernardino Counties North Los Angeles Future Plans SCAG maintains, updates, and provide assistance with tool Future subareas

Question? Thank You !