Friday is the fourth monthly "Queuing Day", or "Learn to Line Up Day" in Beijing. This month it's a queuing day not only for people, but also for cars.

A major promotional event was held in front of the famous Silk Market in the Chaoyang district of Beijing.

Xia Xi, a young female driver and owner of a car club, took part in the event on behalf of the drivers of the three million automobiles in the city.

Traffic jams are becoming a huge problem in the heavily populated Beijing. To some car drivers, lining up seems a waste of time. In her understanding, however, you can save time when you form a line.

"If everybody jumps the queue, it becomes chaos, but if we form a line, the traffic will be smooth and time can be saved," she said.

Queuing up should be a habit rather than a requirement, said Zhao Wenjie, deputy director of Chaoyang district's ethics development office.

"Car drivers should be taught to line up while they are being trained to become drivers, and appropriate regulations are also needed," he said.

Queuing promotions were also held at 100 major crossroads around the city.

On each site, volunteers helped maintain traffic order, discouraging pedestrians from jumping red lights.

Meanwhile, they presented car drivers with promotional materials, including stickers bearing the logo of the event. Drivers were asked to put the stickers on the rear window of their cars, and become part of the promotion.

Starting from this February, the 11th day of every month has been chosen as the promotion day for queuing up until the Olympic Games scheduled to begin on Aug. 8 next year.