The group made the comment in response to a Department for Transport consultation on the reform of local transport planning, which closed last week.
Director Stephen Joseph wrote: "Government planning policy is to reduce the need to travel. However, this is not reflected in local transport planning."
Accessibility planning and other measures to influence people's transport behaviour will benefit the environment, social inclusion and general quality of life, he argued.
The group said it welcomes references in the consultation to regional planning and links to transport planning. But the Treasury's sub-national review of economic development could undermine this, it lamented.
The review's focus is on short-term economic development with no regard for social and environmental factors, Joseph added.