Nearly 60 university student volunteers from 5 universities went onto Kunming city streets and delivered questionnaires to public passengers, private car owners and other citizens during Public Transportation Week and Car-free Day (PTW&CFD) on 16 through 22 September. 1085 questionnaire paper were collected after the event. The student volunteers also disseminate some knowledge and answered related questions to participants of the activity.  Kunming Public Transportation Week & Car-Free Day opening ceremony  A private car owner is learning knowledge about car-free day  A citizen is answering volunteer's questions |