Amendments to Smoke Inspection Programs and Development of Future, Comprehensive Heavy-Duty Vehicle Inspection and Maintenance Program

This page last reviewed May 17, 2017


Background

The Heavy-Duty Vehicle Inspection Program (HDVIP) and Periodic Smoke Inspection Program (PSIP), which began over two decades ago, are ARB's existing heavy-duty vehicle screening programs to detect potentially high-emitting in-use trucks and buses.  These programs have been highly effective in identifying tampered heavy-duty vehicles and those with excessive smoke emissions but were established before the use of exhaust aftertreatment, such as diesel particulate filters (DPFs) and selective catalytic reduction systems. 

ARB's most comprehensive in-use fleet rule to date, the Truck and Bus Regulation, requires the use of original equipment DPFs and retrofit DPFs.  It is therefore important for ARB to ensure that DPFs are well maintained and are working properly in order to achieve expected emission reductions.  Additionally, on-board diagnostics (OBD) systems, which are intended to monitor engine and emission control systems performance, were not fully in use in heavy-duty engines until the 2013 model year.  The current HDVIP and PSIP programs do not take advantage of the extensive capabilities of HD OBD systems to help ensure in-use compliance. 

California now needs an updated and comprehensive heavy-duty vehicle inspection and maintenance (HD I/M) program based on today's modern engine technologies (e.g., aftertreatment and OBD) that is capable of monitoring additional criteria and toxic pollutants. An important first step in transitioning to a more robust HD I/M program is to revise the current opacity threshold to assist in identifying heavy-duty trucks in need of repair due to broken DPFs. 

This webpage details ARB's activities related to potential regulatory revisions on the HDVIP and PSIP to reduce the opacity threshold, and to the development of a future, comprehensive HD I/M inspection and maintenance program.


What's New


Posted April 7, 2017:

On May 17, 2017, CARB staff will conduct a public workshop at the CalEPA HQ building in Sacramento to discuss staff's proposed regulatory amendments to the CARB's HDVIP and PSIP.  This is the third and final public workshop before staff presents its proposal to the Board at the October 26-27, 2017, public Board meeting in Riverside, California.  Please see the workshop notice for more details, including how to access the workshop by webcast.  In addition, staff also will briefly discuss its ongoing efforts to develop a comprehensive heavy-duty vehicle inspection and maintenance program, for implementation in the post-2020 timeframe, for vehicles with a gross vehicle weight rating over 14,000 pounds.

Posted February 1, 2017: 

On February 28, 2017, ARB staff will conduct a public workshop in Diamond Bar at the office of the South Coast Air Quality Management District to discuss potential regulatory changes to the ARB's HDVIP and PSIP. Staff also will briefly discuss progress toward developing a comprehensive inspection and maintenance program for heavy-duty diesel vehicles (HD I/M program) with a gross vehicle weight rating over 14,000 pounds, which is planned for implementation in the post-2020 timeframe. Earlier workshops were held on August 25, 2016, and September 9, 2016, in El Monte and Sacramento, respectively. Please see the workshop notice for more details.   

Posted September 1, 2016:

Please note that web link to access the September 9, 2016, public workshop webcast has been changed to https://video.calepa.ca.gov/, which is different from the web link shown in the July 20, 2016, workshop notice.

Posted July 20, 2016:

ARB staff will conduct workshops in El Monte (August 25, 2016) and Sacramento (September 9, 2016) to discuss potential regulatory changes to the ARB's HDVIP and PSIP.  Staff also will briefly discuss its plans to develop a comprehensive inspection and maintenance program for HD diesel vehicles with a gross vehicle weight rating over 14,000 pounds for implementation in the post-2020 timeframe.  The same material will be discussed at both workshops. Please see the workshop notice for more details.


Workshops and Meetings

Date/Time Description Agenda or
Hand-Outs
         May 17, 2017,             in Sacramento
1:30 p.m. - 4:30 p.m.
Third Public Workshop to Discuss Proposed Amendments to the Heavy-Duty Vehicle Inspection Program and the Periodic Smoke Inspection Program Workshop Notice
May 17, 2017
Workshop Presentation

       February 28, 2017,       in Diamond Bar
1:30 p.m. - 4:00 p.m.
Public Workshop to Discuss Potential Changes to the Heavy-Duty Vehicle Inspection Program and the Periodic Smoke Inspection Program and to Discuss Plans for a Future, Comprehensive Heavy-Duty Diesel Vehicle Inspection and Maintenance Program Workshop Notice
Feb. 28, 2017
Workshop Presentation


August 25, 2016,    in El Monte
1:00 p.m. - 4:00 p.m.

September 9, 2016, in Sacramento
1:00 p.m. - 4:00 p.m
Public Workshop to Discuss Potential Changes to the Heavy-Duty Vehicle Inspection Program and the Periodic Smoke Inspection Program and to Discuss Plans for a Future, Comprehensive Heavy-Duty Diesel Vehicle Inspection and Maintenance Program


Related Links


For questions on potential regulatory changes to the HDVIP and PSIP, please contact:
Jason Hill-Falkenthal, Ph.D.
Mobile Source Regulatory Development Branch, MSCD
at (916) 322-4683

For questions on the development of a comprehensive heavy-duty vehicle inspection and maintenance program, please contact:
Krista Fregoso
Mobile Source Regulatory Development Branch, MSCD
at (916) 445-5035

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