A combo pictures shows vehicles travel on the Beijing East 4th Ring Road during rush hour on July 18, 2008 (bottom) and July 20. Cars will be banned on alternate" title="a.交替的 v.轮流">alternate days depending on whether their license plates end in odd or even numbers. Beijing hopes to take the city's 2.2 million cars off the roads and reduce emissions by 63 percent for a two-month period.

Cars with even number plates travel on a road in Beijing, July 20, 2008. Traffic restrictions came into affect in Beijing on Sunday in an attempt to improve the capital's air quality and traffic situation for next month's Olympics. Cars will be banned on alternate" title="a.交替的 v.轮流">alternate days depending on whether their license plates end in odd or even numbers. Beijing hopes to take the city's 2.2 million cars off the roads and reduce emissions by 63 percent for a two-month period.

A combo pictures shows vehicles travel on the Beijing West 2nd Ring Road during rush hour on July 18, 2008 (bottom) and July 20, 2008. The lanes besides the central fence are reserved for Olympic traffic.Cars will be banned on alternate" title="a.交替的 v.轮流">alternate days depending on whether their license plates end in odd or even numbers.

[Agencies 2008-07-20 20:38]