Photo taken on April 16, 2015 shows a 12-meter-long trolley bus with super capacitor at the Ningbo base of China South Railway (CRS) in Ningbo, east China's Zhejiang province. Trolley buses with super capacitor featured high power start-up, quick charge and high recycling efficiency. They will be fully charged at a bus station within 30 seconds and running over 5 kilometers. The service life for such a trolley bus will last as long as 12 years. (Xinhua/Ju Huanzong)
