Resources » Regulations » Retrofit Programs

USA-California: Diesel Risk Reduction Program

California ARB

Risk management activities following the identification of diesel particulates as a toxic air contaminant in California. Covers all California diesel retrofit programs.
USA: National Clean Diesel Campaign (NCDC)


Web site of the EPA’s clean diesel campaign, including heavy-duty diesel retrofit, funding assistance, verified technologies, news, and related information.
USA: Environmental Technology Verification Program


Verification statements and test reports of the EPA/ETV emission control technology verification program.
Switzerland: FOEN Particulate Filter List


List of filter systems and a list of engines that comply with the Ordinance on Air Pollution Control (OAPC) for construction machines.
Japan: Tokyo Diesel Retrofit Program

City of Tokyo

Web site of the Tokyo diesel program, in Japanese.