China's chance to further reduce diesel emissions with robust policy "punches"
Author: Tianlin Niu
Doing more to abate emissions from diesel fleets can be one of the most critical missions for China in the next decade. Over the past few years, ICCT has reviewed the best clean diesel programs in China and the historical policy practices in California, a world leader in diesel emission control policies. Just recently, we published a paper that identified a suite of robust clean diesel “punches” for China to consider in roughly the next 10 to 15 years. These are diesel emission reduction strategies that focus on five major policy areas and cover emissions from four sectors: on-road commercial vehicles, non-road machinery, rail, and marine. The clean diesel vehicle and engine standards for new vehicles, a category that includes things like introducing China VII emission standards, is the most powerful of the policy categories for reducing NOx emissions and contributes nearly 60% of the reductions in 2035. The ZEV targets and GHG regulations categories, which include things like ZEV sales targets and stringent fuel efficiency standards, respectively, showed great co-benefits for both NOx and PM emissions control all the way through to 2035, together contributing about 25% of the NOx reductions and about 45% of the PM reductions. The clean transportation category, which includes things like specific freight activity transferred from on-road to rail, would work most effectively in the first 5 years.