People's Republic of China Transport Air Pollution Profile 2026
PEOPLE'S REPUBLIC OF CHINA
TRANSPORT AIR POLLUTION PROFILE
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Background
The People's Republic of China, classified as an upper-middle-income economy in the East Asia region, had a population of 1.4 billion in 2024. With a GDP (PPP) of $38.2 trillion and per capita income of $26,907 in the same year, the country has experienced robust economic expansion at an average annual rate of 8.2% since 2010. This sustained growth has driven substantial increases in transportation activity and energy consumption, creating significant environmental and public health challenges despite concurrent improvements in emissions-control technologies and air-quality management policies.
The annual average population-weighted concentration of PM 2.5 in the People's Republic of China declined from 45.3 micrograms per cubic meter in 2000 to 32.0 micrograms per cubic meter in 2023, reflecting the impact of air quality interventions implemented over two decades. However, this 2023 level remains substantially above both the World Health Organization air quality guideline of 5 micrograms per cubic meter and the interim target of 25 micrograms per cubic meter, though it compares somewhat favorably to the East Asia regional average of 24.9 in 2022. The State of Global Air estimates that transport and international shipping contributed approximately 7.6% and 0.3% to ambient PM 2.5 concentrations respectively in 2019, underscoring the sector's material but not dominant role in total air pollution. The Institute for Transportation and Development Policy reports that only 40% of the country's urban population resides beyond 500 meters from highways, indicating widespread exposure to traffic-related pollution among city dwellers.
The health consequences of this pollution burden are severe and economically substantial. The World Bank estimated that 1,423,633 deaths occurred prematurely due to ambient PM 2.5 exposure in 2019, while McDuffie et al. (2021) attributed approximately 115,509 of these premature deaths specifically to transport tailpipe emissions. In 2023, occupational exposure to diesel engine exhausts alone caused at least 10,758 premature deaths, equivalent to approximately 8 deaths per million population. The aggregate annual cost of health damages from ambient and household PM2.5 exposure reached $3,028.7 billion in 2023, representing approximately 13% of GDP—a proportion significantly higher than the Asia-Pacific average of 10.6% of GDP and more than twice the country's healthcare expenditure of 5.4% of GDP in 2022.
PM 2.5 emissions from the transport sector grew at an annual rate of 3.8% between 2000 and 2010, then decelerated to 1.8% annual growth between 2010 and 2022, indicating some success in decoupling transport emissions from economic growth. During the same period, PM2.5 emissions from other sectors declined by 2.1% annually, increasing transport's share of total PM2.5 emissions to 7% by 2022. The modal composition of transport PM 2.5 emissions in 2022 showed domestic navigation accounting for 76%, road transport 16%, rail 7%, and domestic aviation 1%. The road transport share decreased substantially from 25% in 2010 to 16% by 2022, while domestic navigation's share surged from 56% to 76% over the same period, reflecting both the rapid growth of inland waterway freight and relatively slower progress in controlling vessel emissions. Within the road sector, the International Institute for Applied Systems Analysis (IIASA) estimates that heavy-duty vehicles account for 60% of PM2.5 emissions in 2025, with buses accounting for 24%, light-duty vehicles for 12%, and motorcycles for 4%. Notably, non-exhaust emissions from resuspended dust, brake wear, and tire wear constituted 48% of road sector PM 2.5 emissions by 2022, nearly doubling from 25% in 2010, as exhaust controls improved more rapidly than the mitigation of mechanical emissions sources.
Nitrogen oxide (NOx) emissions from transport increased by 4.9% annually between 2000 and 2010, then slowed to 0.6% annual growth between 2010 and 2022, while NOx emissions from other sectors declined by 3.0% annually after 2010. By 2022, transport accounted for 28% of total NOx emissions, with road transport contributing 56%, domestic navigation 39%, domestic aviation 3%, and rail 2%. The road sector's share declined from 68% in 2010 to 56% in 2022, while domestic navigation's share increased from 25% to 39%. IIASA estimates indicate that within road transport, heavy duty vehicles generate 68% of NOx emissions in 2025, buses 20%, light duty vehicles 11%, and motorcycles 1%.
Sulfur oxide (SOx) emissions from transport grew by 2.6% annually between 2000 and 2010, then accelerated to 4.4% annual growth between 2010 and 2022, even as other sectors achieved a 1.3% annual decline after 2010. Transport's contribution to total SOx emissions reached 5% by 2022, with domestic navigation accounting for 99%, domestic aviation 1%, and road transport effectively eliminated at 0% (down from 1% in 2010). This pattern reflects the near-complete desulfurization of road fuels combined with continued use of high-sulfur marine fuels in inland waterways.
Methane (CH4) emissions from transport grew 8.0% annually between 2000 and 2010, then decelerated to 1.1% annual growth through 2022, with the road sector responsible for 96% of transport CH4 emissions by 2022. Non-methane volatile organic compound (NMVOC) emissions increased 1.0% annually between 2000 and 2010, then slowed to 0.4% annually through 2022, with road transport contributing 94% by 2022. Black carbon (BC) emissions from transport grew 3.7% annually between 2000 and 2010, then slowed to 1.0% through 2022, with domestic navigation accounting for 74%, road transport 25%, domestic aviation 1%, and rail 1% by 2022—a sharp shift from 2010 when road and navigation each contributed 49%.
In 2023, the road sector accounted for 69% of total transport energy consumption, with domestic aviation contributing 13%, domestic navigation 12%, and rail 6%. Oil products accounted for 80% of the transport energy mix in 2023, down from 88% in 2010 and 83% in 2015, indicating gradual but incomplete fuel diversification. Biofuels and electricity constituted 3% and 6% of transport energy consumption, respectively, by 2023. The rail sector achieved particularly notable progress in electrification, increasing its electricity share from 29% in 2010 to 74% by 2023. The country's grid emission factor stood at 555 grams of CO2 per kilowatt-hour in 2024, slightly better than the Asia-Pacific average of 559 but marginally higher than the East Asia regional average of 544. The grid improved at 2.0% annually since 2015, outpacing the Asia-Pacific rate of 1.4% per year. Implicit fossil fuel subsidies impose additional external costs on society, with 53% of these costs manifesting as increased local air pollution. Fuel tax revenues comprise approximately 3% of total government revenue and face structural decline as transport electrification advances, creating fiscal challenges for governments traditionally reliant on fuel taxation.
The United Nations Environment Programme's E-mobility Readiness Index assigned the country a score of 91 out of 100, with component scores of 22 for technology and market, 25 for policy, 22 for energy infrastructure, and 22 for financial instruments, indicating strong overall readiness across multiple dimensions. Motorization reached 313 vehicles per thousand population in 2024 compared to 287 in 2000, closely tracking the Asia-Pacific average of 317 vehicles per thousand population in 2024.
Rapid transit infrastructure expanded substantially from 5.1 kilometers per million urban population in 2015 to 13.9 kilometers by 2024, reflecting major government investments in metro and bus rapid transit systems. However, among the 708 urban agglomerations, only 14% achieved an access level of 50% or better, meaning that in most cities, half or fewer residents live within 500 meters of public transport. In 65% of cities, 8 out of 10 residents lack convenient access to public transport, highlighting persistent gaps in last-mile connectivity and service coverage that encourage continued reliance on private motorized transport and its associated emissions.
Air Quality
Air Pollution from Transport
Health Burden
Resuspended Dust, Brake, and Tyre-wear
Vehicle Fuel Mix
Vehicle Fleet
Policy Landscape
Aviation emission standards
| "14th Five-Year" Civil Aviation Development Plan | Not Found | CO2 emissions per ton-km in transport aviation (kg): 2020: [0.928]; 2025: [0.886]; Energy consumption per passenger at airports (kg standard coal): 2020: [0.948]; 2025: [0.853]; *Note: 1. Data in [ ] are cumulative figures. | 2025 |
EV in freight
| "14th Five-Year Plan" Development Plan for Comprehensive Transportation Services | Not Found | In national ecological civilization pilot zones and key regions for air pollution prevention and control, the proportion of new or upgraded public transport, taxi, and logistics delivery vehicles that are new energy vehicles shall be no less than 80% annually. | 2025 |
| 14th Five-Year Plan Modern Comprehensive Transportation System Development Plan | Not Found | The proportion of new energy urban buses: 72%. Promote the electrification of urban public service vehicles and vehicles operating within ports and airports. In cities with a population of over one million (excluding severely cold regions), the proportion of electric vehicles among newly added or replaced ground public buses, urban logistics delivery vehicles, postal and express delivery vehicles, taxis, government service vehicles, and sanitation vehicles shall be no less than 80%. | 2025 |
| Green Transportation "14th Five-Year" Development Plan | Not Found | New energy vehicles account for 72% of urban public transportation, 35% of taxis (including online ride-hailing vehicles), and 20% of urban logistics and distribution nationwide. New energy and clean energy container trucks account for 60% of international container hubs and seaports. The proportion of new energy vehicles in new or updated public transportation, taxis, logistics and distribution vehicles in national ecological civilization pilot areas and key areas for air pollution prevention and control shall not be less than 80%. | 2025 |
EV in public transport
| "14th Five-Year Plan" Development Plan for Comprehensive Transportation Services | Not Found | In national ecological civilization pilot zones and key regions for air pollution prevention and control, the proportion of new or upgraded public transport, taxi, and logistics delivery vehicles that are new energy vehicles shall be no less than 80% annually. | 2025 |
| 14th Five-Year Plan Modern Comprehensive Transportation System Development Plan | Not Found | The proportion of new energy urban buses: 72%. Promote the electrification of urban public service vehicles and vehicles operating within ports and airports. In cities with a population of over one million (excluding severely cold regions), the proportion of electric vehicles among newly added or replaced ground public buses, urban logistics delivery vehicles, postal and express delivery vehicles, taxis, government service vehicles, and sanitation vehicles shall be no less than 80%. | 2025 |
| 14th Five-Year Plan on Modern Energy System Planning | Not Found | Actively promote the application of new energy vehicles in urban public transportation and other fields. By 2025, the sales of new energy vehicles will account for about 20%. | 2025 |
| Five-Year Action Plan to Accelerate the Construction of a Strong Transportation Nation (2023-2027) | Not Found | New energy vehicles account for more than 75% and 35% of urban public transportation and taxi sectors respectively. The proportion of electric vehicle equipment in airports will reach more than 25%. | 2027 |
| Green Transportation "14th Five-Year" Development Plan | Not Found | New energy vehicles account for 72% of urban public transportation, 35% of taxis (including online ride-hailing vehicles), and 20% of urban logistics and distribution nationwide. New energy and clean energy container trucks account for 60% of international container hubs and seaports. The proportion of new energy vehicles in new or updated public transportation, taxis, logistics and distribution vehicles in national ecological civilization pilot areas and key areas for air pollution prevention and control shall not be less than 80%. | 2025 |
EV in water transport
| Promote the development of multimodal transport, optimize and adjust the transport structure Work Program (2021-2025) | Not Found | The proportion of bulk goods transported by major coastal ports such as Beijing-Tianjin-Hebei and surrounding areas, the Yangtze River Delta, and the Guangdong-Hong Kong-Macao Greater Bay Area using port railways, waterways, closed belt corridors, and new energy vehicles will strive to reach 80% | 2025 |
EV mandates/ procurement
| 14th Five-Year Plan Modern Comprehensive Transportation System Development Plan | Not Found | The proportion of new energy urban buses: 72%. Promote the electrification of urban public service vehicles and vehicles operating within ports and airports. In cities with a population of over one million (excluding severely cold regions), the proportion of electric vehicles among newly added or replaced ground public buses, urban logistics delivery vehicles, postal and express delivery vehicles, taxis, government service vehicles, and sanitation vehicles shall be no less than 80%. | 2025 |
| Action Plan for Carbon Dioxide Peaking before 2030 ('1+N') | Not Found | By 2030, the share of incremental vehicles fueled by new and clean energy will reach around 40% By 2030, no less than 70% of travel will be conducted through environmentally friendly means in cities with permanent populations of one million or more. | 2030 |
| China's Mid-Century Long-Term Low Greenhouse Gas Emission Development Strategy | Not Found | By 2030, the proportion of new energy and clean energy-powered vehicles will reach about 40% of all the vehicles sold in that year. | 2030 |
| Comprehensive work plan for energy conservation and emission reduction in the 14th Five-Year Plan | Not Found | By 2025, the sales volume of new energy vehicles will reach about 20% of the total sales volume of new vehicles. | 2025 |
| Mid- to Long-term Development Plan for the Automotive Industry | Not Found | By 2025, new energy vehicles will account for more than 20% of automobile production and sales, and the energy density of power battery systems will reach 350 watt-hours/kilogram. | 2025 |
| New Energy Vehicle Industry Development Plan (2021-2035) | Not Found | The average power consumption of new pure electric passenger vehicles will be reduced to 12.0 kWh/100 km, the sales volume of new new energy vehicles will reach about 20% of the total sales volume of new vehicles, highly autonomous vehicles will achieve commercial application in limited areas and specific scenarios, and the convenience of charging and swapping services will be significantly improved. | 2025 |
| The People's Republicof China Fourth National Communication on Climate Change | Not Found | By 2030, around 40% of newly added vehicles each year will be poweredby renewable and clean energy sources | 2030 |
| Opinions of the CPC Central Committee and the State Council on Comprehensively Advancing the Construction of a Beautiful China | 2024 | By 2027, the proportion of new energy vehicles in newly added vehicles will strive to reach 45% | 2027 |
| Notice from the Ministry of Industry and Information Technology Regarding Matters Related to the Average Fuel Consumption and New Energy Vehicle Credit Management of Passenger Vehicle Enterprises in 2024-2025 | 2023 | The new energy vehicle credit ratio requirements for 2024 and 2025 are 28% and 38%, respectively. | 2025 |
Port electrification
| Action Plan on Demonstrating and Promoting the Use of Shore Power by Container Ships and Cruise Ships on International Routes at Ports (2023-2025) | Not Found | Regarding the installation rate of ship power receiving facilities. By the end of 2024, cruise ships of international cruise companies berthing at cruise ports with shore power supply capabilities will have power receiving facilities. Regarding the installation coverage rate of shore power facilities at ports and terminals. We strive to achieve 100% coverage of high-voltage shore power facilities at the terminals where cruise port enterprises berth cruise ships by the end of 2024. | 2024 |
| Action Plan on Demonstrating and Promoting the Use of Shore Power by Container Ships and Cruise Ships on International Routes at Ports (2023-2025) | Not Found | Regarding the installation rate of ship power receiving facilities, by the end of 2025, 40% of international trunk container ships (including owned and leased ships) of international container liner companies that call at ports with shore power supply capabilities will have power receiving facilities. By the end of 2025, 90% coverage of high-voltage shore power facilities at the terminals where international hub seaport-related container port enterprises berth international trunk container ships. | 2025 |
| Green Transportation "14th Five-Year" Development Plan | Not Found | New energy and clean energy container trucks account for 60% of international container hubs and seaports. The amount of shore power used by ports and water service areas in the Yangtze River Economic Belt increased by 100% compared with 2020. | 2025 |
Railway electrification
| Five-Year Action Plan to Accelerate the Construction of a Strong Transportation Nation (2023-2027) | Not Found | The electrification rate of railways has reached more than 75%. Accelerate the electrification of existing railways, and achieve a railway electrification rate of more than 75%. | 2027 |
| Implementation Plan for Promoting Low-Carbon Development in the Railway Industry | Not Found | The railway electrification rate has reached over 78%. | 2030 |
Vehicle scrappage scheme
| Action plan to promote large-scale equipment renewals and consumer product trade-ins | Not Found | The volume of scrapped cars recycled will approximately double that of 2023, and the volume of used car transactions will increase by 45% compared to 2023. | 2027 |
| Mid- to Long-term Development Plan for the Automotive Industry | Not Found | The level of energy conservation and environmental protection and the recycling rate of automobiles have been continuously improved, the automobile recycling rate will reach 95% by 2020. By 2025, the actual recycling rate of automobiles will reach the international advanced level. | 2025 |
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