Over the last two decades, urban planning has been reapplied in several European countries: common tendencies that underline the reform of planning procedures are the generalization of sustainable development and the reorganization of local government. Bringing an additional degree of complexity to planning procedures, the implementation of sustainable development appears to be strongly dependent of an effective and efficient inter-sectorial coordination between urban and transport policies. However, beyond these common evolutions, large differences appear in practice, depending on political cultures, planning traditions, and local contexts.