Transportation industry is the second largest source of global greenhouse gas emissions . In the EU , for example, in 2010 the EU-27 greenhouse gas emissions of 4.721 billion tons , of which the transport sector contributed 931 million tons , accounting for 19.72% , second only to the energy sector . Therefore , the world attach great importance to promote low-carbon transport .

To sum up, the basic strategy of urban development around the world , including avoiding low-carbon transport , transfer and improvement of three kinds .

Avoid strategy emphasizes the regulation of the overall urban planning of urban transport demand through reasonable urban spatial form , function zoning and land use, to avoid unnecessary traffic demand from the source , including reducing the number of trips and shorter travel distance , thereby reducing transport carbon emissions.

By implementing the strategy is generally to avoid multi-center space layout in urban planning , to encourage integrated development of land for many purposes , focusing on multi-functional mixed use of land, buildings , land of public transportation -oriented development , traffic -friendly form of urban land use structure , so that people can be more short-term , close- reach work and shopping locations , reducing traffic travel needs.

Avoid strategy also includes the implementation of a specific area traffic control, reduce traffic and air pollution in the city center area.
Transfer strategies , coming originally borne by the high carbon intensity of transportation traffic shifted to the low carbon intensity of transportation in order to achieve in the goods , the same premise of passenger traffic , the purpose of reducing carbon dioxide emissions. Traffic actually transfer strategy is based on low-carbon development of structural adjustment .

According to ex -hung ball joint  understanding, developing urban public transport contributes to energy saving transportation . Japan's transport carbon emissions monitoring showed that about 30 % of public bus transport unit amount of carbon dioxide emissions only private vehicles, lower emissions of rail transport , walking and cycling slow traffic way is zero carbon transport .

Improvement strategy is the improvement of energy consumption and emission levels of the original transport , reducing carbon emissions transport unit mileage , enabling traffic in the same way , the same premise traffic travel distance , the effect of reducing carbon dioxide emissions . Improvement strategy is essentially the development and application of low-carbon transport .

Energy-saving and new energy vehicles is the future trend of development, both to reduce dependence on fossil fuels , but also to reduce vehicle exhaust emissions. Countries attach great importance to the development of energy-saving technology vehicles , the government also adopted standards, taxation and other policies to promote low-carbon energy transport applications.

Many countries issued a national standard on automobile consumption and exhaust emissions. The Japanese government implemented since 1999 , " the leader system (Top-runner)", that is, based on the current market carmakers vehicle fuel economy performance of the company's best performance , and consideration of future technological progress , which set a ratio one of the best fuel economy performance of a higher standard , and promote manufacturers to improve vehicle fuel economy and emissions standards.
Governments to support the production of energy-saving cars , motivate users to buy and use energy-efficient low-emission vehicles, general introduction of appropriate tax cuts. Japan's new energy vehicle purchase tax exemption , and give 50% reduction in vehicle use tax preferential tax policies for low emissions, high fuel economy of traditional energy vehicles also give some tax relief. France has issued a "super bonus (Superbonus)" program in 2008 to encourage the elimination of the use of time more than 15 years old car . Germany issued a new motor vehicle tax system in 2009 , in addition to also encourage the elimination of old cars , but also the implementation of different taxes based on displacement size of the car.

According to ex -hung ball joint  note , traffic intelligence, information is also important to improve the content strategy. Carbon dioxide emissions from vehicles in the crowded state is much higher than the emissions of carbon dioxide at high speeds . Japan to improve the efficiency of road use through extensive application of intelligent transportation systems (ITS), through the use of vehicle information transport systems (VICS), Electronic Toll Collection System (ETC) and other intelligent transportation technologies to improve vehicle speed , ease the traffic congestion , and to improve fuel efficiency , to achieve traffic reduction .