Photo by Davide Valerio on Unsplash
Air pollution remains one of the most significant environmental and public health challenges associated with the transport sector across Asia and the Pacific. Rapid economic growth, rising vehicle ownership, and expanding transport demand have contributed to increasing pressure on urban air quality, even as many countries strengthen emission standards and fuel quality regulations.
These Transport and Air Pollution Profiles developed by the Asian Transport Observatory provide concise, data-driven snapshots of how transport contributes to air pollutant emissions across economies in the region. Drawing on the extensive datasets and policy information compiled under the ATO, these profiles examine key indicators, emission trends, and policy responses related to major pollutants such as PM2.5, nitrogen oxides (NOₓ), sulphur oxides (SOₓ), and black carbon.
Each profile combines data insights and policy insights, highlighting the drivers of transport-related air pollution, the evolution of emissions over time, and the measures being adopted by governments to address these challenges. By bringing together evidence on transport activity, technologies, and policy actions, the profiles aim to support policymakers, researchers, and development partners in identifying opportunities to reduce pollution while improving mobility and accessibility.
The profiles contribute to a broader effort to track progress toward cleaner transport systems in Asia and the Pacific, and to support global, regional, and national goals related to sustainable development, climate action, and improved public health.
Cookies used on the site are categorized and below you can read about each category and allow or deny some or all of them. When categories than have been previously allowed are disabled, all cookies assigned to that category will be removed from your browser. Additionally you can see a list of cookies assigned to each category and detailed information in the cookie declaration.
Some cookies are required to provide core functionality. The website won't function properly without these cookies and they are enabled by default and cannot be disabled.
Analytical cookies help us improve our website by collecting and reporting information on its usage.
Cookies used on the site are categorized and below you can read about each category and allow or deny some or all of them. When categories than have been previously allowed are disabled, all cookies assigned to that category will be removed from your browser. Additionally you can see a list of cookies assigned to each category and detailed information in the cookie declaration.
Some cookies are required to provide core functionality. The website won't function properly without these cookies and they are enabled by default and cannot be disabled.
| Name | Hostname | Vendor | Expiry |
|---|---|---|---|
| sessionid | asiantransportobservatory.org | Asian Transport Observatory | 2 weeks |
|
Used by the website for authentication. |
|||
| csrftoken | asiantransportobservatory.org | Asian Transport Observatory | 24 hrs |
|
Used by website to protect CSRF vulnerable resources. |
|||
Analytical cookies help us improve our website by collecting and reporting information on its usage.
| Name | Hostname | Vendor | Expiry |
|---|---|---|---|
| _ga | .asiantransportobservatory.org | Google Analytics | 2 years |
|
Used by Google Analytics to distinguish users. |
|||
| _ga_Z5W4M9226H | .asiantransportobservatory.org | Google Analytics | 2 years |
|
Used by Google Analytics to to persist session state.. |
|||
| _clck | .asiantransportobservatory.org | Microsoft Clarity | 1 year |
|
Persists the Clarity User ID and preferences, unique to that site is attributed to the same user ID. |
|||
| _clsk | .asiantransportobservatory.org | Microsoft Clarity | 1 year |
|
Connects multiple page views by a user into a single Clarity session recording. |
|||
We use cookies to analyze our traffic. For these reasons, we may share your site usage data with our analytics partners.
By clicking "Allow All", you consent to store on your device all the technologies described in our
GDPR and Privacy Policy page.
You can update your cookie settings by visiting the 'Manage Cookies' link in the footer.