ULAN BATOR, Sept.15 (Xinhua) -- Mongolia marked its Car-Free Day on Sunday with an aim to draw public attention to the problem of air pollution in its capital, Ulan Bator.
The residents' involvement is very important for a successful Car-Free Day organized by the city, said Sainbuyan Amarsaikhan, mayor of Ulan Bator, at the opening ceremony.
"The authorities of Ulan Bator are currently working to improve the living conditions of people and protect their health," he added.
Various events, including a parade of cyclists attended by 5,000 people, were held during the day to encourage Ulan Bator's residents to avoid using cars, and walk or use public transport instead.
All main roads were closed during the Car-Free Day.
Mongolia held its first Car-Free Day in 2009.