Transportation Demand Management (TDM)

Last Updated: 
Oct 31, 2017

Transportation demand management is about making it easy for people to use lower cost, higher efficiency transportation options.

What is TDM?

Transportation demand management helps people use the transportation system more efficiently through education, incentives, products, and programs that encourage taking transit, carpooling, vanpooling, walking, biking, and teleworking.

TDM activities produce wide-ranging benefits to individuals and the transportation system—saving people time and money and reducing traffic congestion, vehicle emissions, and fuel consumption while supporting physical activity and enhanced safety. TDM activities make existing transportation investments perform better, extend the life of existing infrastructure, and can improve outcomes for new investments.

TDM Steering Committee

The TDM Steering Committee is an advisory committee to PSRC composed of TDM implementers in the central Puget Sound. The Committee provides guidance to both local implementers and regional policy makers on delivering TDM benefits across the region, and provides an opportunity for TDM implementers to convene and report on the results of local programs.

Regional TDM Action Plan

The Regional TDM Action Plan articulates the strategic approach for TDM in the region and recommends actions to support and augment the work happening at the local level. The plan is an appendix to the update of Transportation 2040 adopted in May 2014.

In 2017, the TDM Steering Committee engaged in a process to update the Regional TDM Action Plan. The draft update is included below and will again be an appendix to the Regional Transportation Plan, which is expected to be adopted by PSRC’s General Assembly in May 2018.