Inspection and maintenance (I/M) programs are key to identifying high-emitting vehicles and mitigating their impact on air quality and climate. This paper assesses best practices for I/M programs targeting heavy-duty vehicles and makes recommendations on how to improve HDV I/M programs in the future.

In many regions of the world, older, high-emitting vehicles account for a small percentage of the overall vehicle fleet but a disproportionately large share of total emissions. It is estimated that these vehicles may be responsible for more than 50% of particulate matter (PM) and black carbon (BC) emissions by 2020 (Yan et al., 2011).

Investing in ultra-low-sulfur fuel (ULSF, fuels with less than 10 ppm sulfur content) and clean vehicle technologies in India will not come without costs. But the benefits of these investments, in terms of reduced healthcare costs and higher productivity, far outweigh the costs. This paper discusses these issues in detail.

This new working paper by ICCT identifies the most effective technologies for CO2, emissions and safety measures and maps the status of regulatory programs for 2- and 3-wheeler management in Asian countries.

This report focuses on heavy-duty natural gas engine technologies that can achieve Euro III, IV, V and VI emission compliance levels. It is based on a comprehensive review of technical literature regarding emission performance &  technologies was performed for compressed natural gas engines of model year 2000 and newer.