Specially Constructed Vehicles/Kit Cars 1085 Documents

This page last reviewed September 27, 2011.


Background materials for air emissions and public health impacts have been posted to allow stakeholders to verify the estimates presented in the September 2011 Staff Report:

The files presented below show how staff derived the emissions and cost estimates shown in INITIAL STATEMENT OF REASONS PROPOSED REGULATIONS AND CERTIFICATION PROCEDURES FOR LIGHT-DUTY ENGINE PACKAGES FOR USE IN LIGHT-DUTY SPECIALLY CONSTRUCTED VEHICLES FOR 2012 AND SUBSEQUENT MODEL YEARS.

AB 1085 Background: On October 11, 2009, AB 1085 was signed into law and became effective on January 1, 2010. The legislation was subsequently amended by SB 855, which was signed into law and became effective on October 19, 2010, the complete amended text reads:


SECTION 1.  It is the intent of the Legislature in enacting this act to ensure that the public is provided all of the information relied on by State Air Resources Board staff in proposing the adoption, amendment, or repeal of a regulation, including all information related to, but not limited to, air emissions, public health impacts, and economic impacts.  Nothing in this act is intended to supersede the provisions of the California Public Records Act (Chapter 3.5 (commencing with Section 6250) of Division 7 of Title 1 of the Governments Code) or the Administrative Procedure Act (Chapter 3.5 commencing with Section 11340) of Part 1 of Division 3 of Title 2 of the Government Code).

SECTION 2.  Section 39601.5 is added to the Health and Safety Code, to read 39601.5. (a) The state board shall make available to the public all information described in paragraph (2) of subdivision (b) of Section 11346.2 of the Government Code, related to, but not limited to, air emission, public health impacts, and economic impacts, before the comment period for any regulation proposed for adoption by the state board. (b) In meeting the requirement of subdivision (a), the state board shall not release proprietary, confidential, or otherwise legally protected business information.  The state board shall release information in aggregated form, where necessary, to protect proprietary, confidential, or otherwise legally protected business information.

Specially Constructed Vehicles/Kit Cars

Emissions Estimates/Data:


  • Emissions benefits estimates - This file shows how Bureau of Automotive Repair (BAR) Smog Check data was used to determine the values in Table 5.1 and Figures 1 and 2.  (Excel Spreadsheet)
  • SPCNS Mileage Estimates - This file shows how BAR Smog Check odometer reading data was used to estimate the annual mileage for Specially Constructed Vehicles(SPCNS).  (Excel Spreadsheet)
  • Emissions Comparison - This file shows how staff compared SPCNS emission rates to those from an average new vehicle, as shown in Table 5.2.  (Excel Spreadsheet)





Economic Estimates/Data:



  • Cost Estimates - This spreadsheet shows how costs to the engine package manufacturer, installer, and hobbyist were estimated.  (Excel Spreadsheet)
  • Engine Cost Data - This file shows engine cost data extracted from Department of Motor Vehicles (DMV) Statements of Construction (DMV, 2011c).  (Excel Spreadsheet)



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