This 25-page document focuses on the fact that everyone travels and thus transportation planning is an ideal place to promote better health through more active transportation. 

The American Public Health Association and the Safe Routes to School National Partnership have partnered to produce a the guide, which does a good job of laying out:

• Examples of how to become involved with transportation, land use and built environment decisions at various levels in the community, region or state.
• Common ways in which public health professionals can become leaders in the development of active transportation policies.
• A brief overview of how transportation programs are organized and funded.
• Suggestions for ways to engage.