The 70% low-floor LRV developed and manufactured by TRC is of new kind urban railway traffic equipment. Some advanced technology and subassemblies such as high-function AC transmission control, bogies with independent wheelset, composite brake system of electric brake, air brake and electro-magnetic brake, hinged modules, noise control, etc, are employed. So, the 70% low-floor LRV possesses the advantages of comfort, safety, less-pollution, larger transport ability and lower energy consumption. The 70% low-floor LRV is composed of three modules connected by hinge device and gangway diaphragm. It can be driven at two ends. Thanks to the lower floor height, passengers can get on and off the LRV conveniently. Its maximum running speed is over 70 km/h.Compared with subway and elevated railway, the 70% low-floor LRV has the advantages of less cost and sooner effect. The novel concept of humanization and environmental friendly transport has been fully presented. And meanwhile, as scenery, it can improve the city’s image. So, the 70% low-floor LRV can effectively improve urban traffic environment under existing economic condition. It is suitable for operating on the main lines of large/medium sized city and branch lines of cosmopolitan city.