In a closed subway tunnel, using the quiet smokeless power-and-battery dual-energy subway project vehicles rather than smoky noisy fuel subway project vehicles to create a good working environment was what many subway company vehicle drivers and tunnel operating staff look forward to. 

      On March 31, 2012, CSR Zhuzhou Electric Locomotive Co., Ltd. reveals that subway corporations in Beijing, Guangzhou, Kunming, Ningbo and other cities recently signed procurement contracts involved a total of 5 power-and-battery dual-energy subway project vehicles. This initiative of actively promoting “oil to electricity” of subway project operating vehicles will turn the wish of subway company vehicle drivers and tunnel operating staff into reality. 

      Along with the continuous development of the subway industry, the rail project vehicles are more and more frequently employed in subway construction, line maintenance and detection operations, and become vital equipment to guarantee the subway efficient and stable operation. Due to historical reasons, China’s domestic subway engineering industry has always been using fuel vehicles. In contest, Singapore and China Hong Kong have been widely using power-and-battery dual-energy subway project vehicles powered on clean energy in as early as the 1980s. 

       Currently, power-and-battery dual-energy subway project vehicles become the new favorite of the market. On the one hand, it is because of its advantages of being green, environment friendly, energy-efficient, and universal. On the other hand, it is due to the improved environmental awareness of China’s subway corporations. Meanwhile, the rapid progress of industrial technology, represented by CSR Zhuzhou, provides a guarantee for China’s subway industry to equip with power-and-battery dual-energy subway project vehicles. 

       As for its advantages of being green, environment friendly, power-and-battery dual-energy subway project vehicles use contact network or battery for energy supply, and do not produce carbon oxides, dust or other emissions. Moreover, its operating sound is only equivalent to normal conversation, ensuring the environment cleanliness within the tunnel and the health of workers. It is estimated that in the 30-year life cycle, a power-and-battery dual-energy subway project vehicle can produce nearly 2,100 tons of carbon emissions less than a fuel subway construction vehicle. 

       As for its advantages of being efficient and energy-saving, the power-and-battery dual-energy subway project vehicle uses direct electricity transform and its energy efficiency is more than twice of the fuel type. Currently, the diesel prices are pretty high. In its life cycle, a 600-hp power-and-battery dual-energy subway project vehicle can save nearly RMB 8 million yuan than a fuel subway construction vehicle of the same power. 

        The power-and-battery dual-energy subway project vehicle, like the subway vehicle, belongs to the same electric traction technology system, and most of its parts are the same as or similar to subway vehicle’s, such as traction motor, traction inverter, bogie, etc. Therefore, its maintenance technology, maintenance technology platforms, maintenance workers, operating drivers and spare parts reserves can be shared with subway vehicles, greatly reducing the costs of operation, maintenance and management span. 

       Generally, the subway depots are located in the center of a city, and its plant is usually closed. The fuel subway project vehicle has triggered many problems of urban construction due to noise, heavy air pollution and fire hazards from fuel reserves. Subway companies in many cities turn attention to the power-and-battery dual-energy subway project vehicle. 

         In 1999, CSR Zhuzhou developed the first prototype power-type subway project vehicle. In 2009, the company won the Singapore Land Transport Authority project bids involved 14 power-and-battery dual-energy subway project vehicles and Shenzhen Metro Line 2 Detection MU project, becoming the first enterprise in China with the order of power-and-battery dual-energy subway project vehicles and attracting great attention and trust of subway corporations.