top of page


Emission Tool and Publication


Evaluation on Air Pollutants Reduction Effects of Beijing Low Emission Zone and Congestion Charging Policies

Faced with severe congestion and air quality issues, the Beijing Municipal Government has issued a series of transport demand management (TDM) measures and energy conservation and emissions-reduction policies. However, one of the main challenges for the government is to quantify the emissions-reduction effects of different policy schemes and compare the effectiveness of those schemes. Based on current vehicle emissions in Beijing and prevailing international vehicle emission models, Beijing Transport Institute and World Resources Institute made this report in corporation. In order to guide the government to formulate reasonable policy measures and reduce pollutants, this research developed an evaluation methodology that can be applied to Beijing transport policies, especially LEZ/CC policies.

Author: Ying Liu, Ying Cheng, Weinan He, Jin Zhao, Shiyong Qiu, Su Song, Ying Wang - Oct. 2018

Emission tool

The Transport Emissions & Social Cost Assessment

The Transport Emissions & Social Cost Assessment is a project under the World Resources Institute’s Sustainable and Livable Cities Program, funded by the Caterpillar Foundation. The project aims to develop a methodology guide, with a simple MS Excel– based tool, to estimate transport emissions inventories and evaluate the associated social impact costs. The scope of the guide and tool covers six air pollutants (NOX, SOX, PM2.5, PM10, CO, and HC) and three GHGs (CO2, CH4, and N2O) for 18 types of transport modes at either the national or city level, specifically for the regions with limited data accessibility and weak data quality. With the methodology of social cost evaluation, the guide and tool can help with more cost-efficient policy-making. The MS Excel– based tool (Transport Emissions & Social Cost Assessment: TESCA version 1.0) is provided in a separate file.

Author: Su Song - Jan. 2017


Study on International Practices for Low Emission Zone and Congestion Charging

The traffic congestion and its high socioeconomic cost, brought by China’s fast urbanization, has forced the demand for congestion mitigation and emission reduction in the transport sector onto the government’s agenda. Several Chinese cities like Beijing, Shanghai, Hangzhou and Suzhou are considering to mitigate these growing air pollution and traffic congestion issues through Low Emission Zone (LEZ) and Congestion Charging (CC) policies. Based on the policy demands from Beijing Municipal Commission of Transport (BMCT), World Resources Institute (WRI), partnering with Beijing Transportation Institute (BTI), has conducted a comprehensive and thorough research on the successful experience of London, Singapore and Stockholm that have initiated LEZ/CC, with analysis focusing on preparation stage, scheme design, technology, public communication, implementation and management, and policy effects. This working paper discusses practices that can be applied to China, aiming to solve problems and challenges in the effort of congestion mitigation and emission reduction.

Author: Ying Wang, Su Song, Shiyong Qiu, Lu Lu, Yilin Ma, Xiaoyi Li, Ying Hu- June 2016


International Case Studies on Public Communication and Consultation Strategies for Low Emission Zones and Congestion Charging Schemes


The working paper will be part of the “Low Emission Zone/Congestion Charge (LEZ/CC) Public Communication Strategies” series of papers to offer a comprehensive package of public communication strategies to safeguard successful implementation. It is the first paper in the series, and studies 10 cases from Europe, Asia, and the United States to highlight the variety of social, political, and environmental contexts within which CC and LEZ schemes were planned and implemented. From the examples studied, two types of consultation process were identified; scientific/professional and consultative/political. All of the international case studies highlight how public communication is woven into the policy development process, which itself may be split into two stages: ‘internal’ and ‘external’ for a LEZ or CC within an integrated transportation package.

Author:Ying Wang, Fei Ye, Shiyong Qiu, Su Song and Andrew Pickford -January 2018

Rm K-M, 7/F, Tower A, The East Gate Plaza, #9 Dongzhong Street

Beijing, China, 100027


Phone: 86 10 6416 5697

Fax: 86 10 6416 7567



bottom of page