Riding bicycle can free rider from everal trouble when traffic i heavy. Firt, rider need not elbow their way up into a crowded bu. Second, they can go wherever they pleae when numerou vehicle hold up the traffic. Third, bicycling doe much good to the health of regular rider (常骑车的人). Finally, riding bicycle i eco friendly(有利生态的，有利环保的).
While bicycle are hailed a "green traffic", urban driver are complaining about them jamming up the already tight traffic. A boiling ea of bicycle have become a headache for cauing traffic jam and accident. The problem of bicycle battling with car i mingled with (混合) high level of urbanization (都市化) and low level of infratructure(基础设施).
In my opinion, the tough problem mut be olved, otherwie, the growing conflict will teadily grow wore with more automobile on buy treet.
Road building and traffic control hould be improved. In the long run bicycling will till be a neceary and economical upplement to the variou mode of public tranport provided in China the kingdom of bicycle.