Transportation Demand Management

Transportation demand management (TDM) describes programs and projects that emphasize using existing transportation infrastructure to enhance mobility and transportation system efficiency. These projects use techniques like education, incentives and disincentives to reduce the need for vehicle trips (e.g. telework, compressed work weeks, walking, bicycling), the distance of trips (e.g. shop close to home, home delivery); and to shift to higher occupancy modes like transit and other forms of ridesharing.

Many transportation demand management strategies aim to provide more competitive transportation options to driving alone, reduce trips on the system, and spread out transportation demand throughout the day. Examples of transportation demand management strategies include:

  • Commute trip reduction,
  • Providing transit passes to students or workers,
  • Charging for parking,
  • High occupancy toll lanes,
  • High occupancy vehicle lanes,
  • Changing land use zoning to support transit oriented development,
  • Providing showers and bicycle repair and storage at work sites,
  • Promotions like Wheel Options and Bicycle Month,
  • Outreach to employers to increase the use of telework,
  • Senior shuttles to health care facilities, and
  • Vanpools.

The state’s Transportation Demand Management Strategic Plan 2019-2023 explains how the state and it’s partner organizations are integrating Practical Solutions and multimodal strategies to expand travel options across Washington state.

For more general information on transportation demand management, check out the following resources:

For planners and engineers

For practitioners

WSDOT’s Public Transportation Division administers grants that help improve mobility and access. Some of these grants can be used for transportation demand management projects and programs.


Ricardo Gotla, or 206-716-1114