TCM Task Force

Welcome to the Transportation Capacity and Mobility Task Force site.  This Task Force is a group of transportation professionals working together to foster a sharing of ideas and creation of a common understanding of current highway and transportation challenges in the San Diego Area.  Here you will find information on the TCM Task Force in the San Diego Area, including what they are about and other happenings.

You can start by reading their Mission Statement here.

Methodology for VMT Calculations using SANDAG Regional Travel Demand Model

Over the last few years, a technical white paper titled Vehicle Miles Traveled Calculations Using the SANDAG Regional Travel Demand Model has been developed and finalized by the Task Force.  The main contributing authors were Mike Calandra, Cara Leone Hilgesen, Andy Schlaefli, and Allison King.

Current SANTEC/ITE Traffic Impact Study Guidelines (based on los)

Download a copy of the SANTEC/ITE Guidelines for Traffic Impact Studies (TIS) in the San Diego Region here.

new ite transportation impact study guidelines to incorporate sb743

In May 2019, the Task Force prepared revised San Diego Regional Transportation Impact Study Guidelines to incorporate SB 743. The new guidelines can be found here.

The guidelines recommend use of VMT calculator tools for San Diego region that can be found at the following websites:

Governor Brown signed Senate Bill (SB) 743 (Steinberg, 2013), which creates a process to change the way that transportation impacts are analyzed under CEQA. Specifically, SB 743 requires the Governor’s Office of Planning and Research (OPR) to amend the CEQA Guidelines to provide an alternative to LOS for evaluating transportation impacts. Particularly within areas served by transit, those alternative criteria must “promote the reduction of greenhouse gas emissions, the development of multi-modal transportation networks, and a diversity of land uses.” (New Public Resources Code Section 21099(b)(1).) Measurements of transportation impacts may include “vehicle miles traveled, vehicle miles traveled per capita, automobile trip generation rates, or automobile trips generated.” (Ibid.) Once the CEQA Guidelines are amended to include those alternative criteria, auto delay will no longer be considered a significant impact under CEQA. (Id. at subd. (b)(2).) Transportation impacts related to air quality, noise and safety must still be analyzed under CEQA where appropriate. (Id. at subd. (b)(3).) SB 743 also amended congestion management law to allow cities and counties to opt out of LOS standards within certain infill areas. (See Amended Government Code Sections 65088.1 and 65088.4.) Aside from changes to transportation analysis, SB 743 also included several important changes to CEQA that apply to transit oriented developments, including aesthetics and parking.