Ⅰ.The main traffic problems inour cities at present1.The road construction is progressingslowly,the number of motor vehicles shootingup,the passenger transportation growing toofast and the average speed of vehicles decreasingSince the founding of New China,thelength of roads newly constructed has onlyincreased by 1.8 times,while the number ofmotor vehicles rose by 33 times.Thus,withso many vehicles and insufficient roads,