In 2007, China launched the Green Transport and Health week campaign to help residents understand the importance of environmental protection and be mindful about saving energy.
Public transportation helps to conserve energy and have lower emission because the number of vehicles has been reduced.
[1] No Car Day was originally started in preparation for the 2008 Summer Olympic Games that were being held in Beijing.
[2] It is estimated that the 2007 campaign saved 33 million liters of gasoline and cut emissions by 3,000 tons.
[3] During the span of no car day citizens were encouraged to walk, take public transit or ride a bike.
They also had martial law on specific roads that you were prohibited to drive on in 2015, leading up to the Military Parade.
By cutting back cars and emission during the Military Parade created a beautiful sky.