Many promising measures have been implemented in an increasing number of cities and countries throughout the world that promote sustainable transportation. The next steps must be to encourage a more widespread adoption of best practice in the implementation of sustainable transport policies. Thus, the most pressing problem is how to make sustainable transport policies more acceptable, both among the general public and their elected politicians. In this chapter, the authors investigate ways to increase the acceptability of such policies, using case study material from the USA, Canada and the EU.