In CH4LLENGE, nine European cities and eight supporting organisations have teamed up to overcome the four most pressing challenges in sustainable urban mobility planning:

• Stakeholder participation and citizen involvement;
• Institutional cooperation between sectors and disciplines;
• Identification of the most effective policy measures;
• Monitoring and evaluation of progress in SUMP development.

CH4LLENGE will test innovative and transferable solutions in participation, co-operation, measure identification as well as monitoring and evaluation in the participating cities.