雾霾,是今年的一个高频词。中央财政安排50亿元用于治理京津冀及周边地区的空气污染,再次表明了空气质量问题的刻不容缓。出于环保考虑,公共交通领域在大力实施节能减排战略,采购新能源或清洁能源车型已经成为公交未来发展的一大趋势。“目前来看,在公交车领域主要推广的纯电动、混合动力、天然气三种类别中,天然气车型的推 Smog is a high frequency word of this year. The arrangement of 5 billion yuan by the central government for air pollution control in Beijing, Tianjin and the surrounding areas has once again indicated that the air quality issue is imperative. For environmental considerations, public transport is vigorously implementing energy-saving emission reduction strategies, purchasing new energy or clean energy vehicles has become a major trend in the future development of public transport. ”At present, among the three types of pure electric, hybrid and natural gas mainly promoted in the bus field, the push of natural gas models