BILL ANALYSIS                                                                                                                                                                                                    


          |SENATE RULES COMMITTEE            |                  SB 1328|
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          Bill No:  SB 1328
          Author:   Lowenthal (D)
          Amended:  4/12/10
          Vote:     21

          AYES:  Simitian, Runner, Corbett, Hancock, Lowenthal,  
            Pavley, Strickland

           SENATE APPROPRIATIONS COMMITTEE  :  Senate Rule 28.8

           SUBJECT  :    Greenhouse gas emissions:  motor vehicle cabin  

           SOURCE  :     Exatec, LLC

           DIGEST  :    This bill requires the Air Resources Board to  
          consider specified matters in developing regulations to  
          reduce motor vehicle cabin temperature in order to reduce  
          greenhouse gas emissions.

           ANALYSIS  :     Existing law  , under the California Global  
          Warming Solutions Act of 2006:

          1. Requires the California Air Resources Board (ARB) to  
             determine the 1990 statewide greenhouse gas (GHG)  
             emissions level and approve a statewide GHG emissions  
             limit that is equivalent to that level, to be achieved  
             by 2020.  ARB must adopt regulations for reporting and  
             verification of GHG emissions, monitoring and compliance  


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             with the program, and achieving GHG emission reductions  
             from sources or categories of sources by January 1,  
             2011, to be operative on January 1, 2012, subject to  
             certain requirements.

          2. Requires ARB to prepare and approve a scoping plan for  
             achieving the maximum technologically feasible and  
             cost-effective reductions in GHG emissions from sources  
             or categories of sources of GHGs by 2020.  ARB must  
             evaluate the total potential costs and total potential  
             economic and noneconomic benefits of the plan for  
             reducing GHGs to the state's economy, and public health,  
             using the best economic models, emission estimation  
             techniques, and other scientific methods.  The plan must  
             be updated at least once every five years.  

          3. Authorizes the ARB to adopt GHG emission limits or  
             emission reduction measures prior to January 1, 2011,  
             imposing those limits or measures prior to January 1,  
             2012, or providing early reduction credit where  

          This bill requires the ARB, in developing regulations to  
          reduce cabin temperatures in vehicles in order to reduce  
          GHG emissions, to consider the following:

          1. Potential reductions in air conditioning use that can be  
             achieved while a motor vehicle is moving, in addition to  
             reductions in air conditioning use when a motor vehicle  
             is parked.

          2. Potential conflicts between, and relative benefits of,  
             motor vehicle cabin temperature reduction requirements  
             and technologies that provide motor vehicle GHG emission  
             reductions through various means.

          3. The manufacturing flexibility necessary to achieve  
             overall maximum GHG emission reductions from motor  

           Vehicle Cabin Temperature Standard  .  The concept behind  
          'cool cars' is to keep cars and light trucks cooler so less  


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          fuel is needed to keep the cabin temperatures comfortable,  
          thus reducing fuel consumption and GHG and other  
          pollutants.  In May of 2008 the ARB embarked on a  
          rulemaking process for cool cars as part of the overall GHG  
          reduction strategies.  On June 25, 2009, ARB adopted the  
          cool car regulation that required new vehicles starting  
          with the 2012 model year to be equipped with solar control  
          windows.  These windows limit the amount of solar radiation  
          entering the vehicle, allowing the air conditioning units  
          to be downsized or used less frequently.  Less air  
          conditioning use or smaller air conditioning units  
          translates into less fuel burned and lower GHG emissions  
          emitted by the vehicle.  ARB staff estimated that the  
          requirements when fully implemented would have prevented  
          over one-million metric tons of CO2 from being emitted into  
          the air.  The solar controlled windows used a 'glazing'  
          technology that blocked solar energy and reduced heat build  
          up in the car.

          On March 25, 2010 the ARB withdrew the regulation approved  
          on June 25, 2009, from the rulemaking process after  
          determining that insufficient time remained on the  
          rulemaking calendar to achieve consensus on the rule and  
          problems with the metallic glazing.  The ARB plans to  
          revisit a different approach to keeping cars cool in the  
          next phase of motor vehicle regulations, which will be  
          phased in starting with the 2017 model year.

          According to the author's office, this bill will provide  
          policy guidance to ARB when it resumes its work on a  
          vehicle cabin temperature standard, to broaden the factors  
          it considers in how air conditioning based vehicle  
          emissions are achieved and to consider how it can avoid  
          potential conflicts between various beneficial new  
          technologies that will reduce vehicular GHG emissions.  It  
          ensures that the ARB has all of the necessary tools to  
          provide flexibility to the auto and related industries with  
          certain regulations in order to achieve the greatest GHG  
          reductions possible associated with light and medium duty  

           FISCAL EFFECT  :    Appropriation:  No   Fiscal Com.:  Yes    
          Local:  No


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           SUPPORT  :   (Verified  5/4/10)

          Exatec, LLC (source)

          TSM:do  5/4/10   Senate Floor Analyses 

                         SUPPORT/OPPOSITION:  SEE ABOVE

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