Transportation policy is crucial for both urban and global pollution issues, and there needs to be a policy shift toward more investment in public transportation to change mobility. There should be long-range, strategic policies that address behavior. There is a need to influence behavior and consider cultural elements in the analysis of policy and context. Possible policy consequences must be analyzed. Uncertainty is recognized as having an important role in policy making.
Some policies go in and out of favor, such as land use planning.
Mexico has a maturing policy making system. Relating environmental issues to other priority issues, such as congestion, should be further explored.