1. The department shall develop a centrally fueled fleet program for light duty and heavy duty vehicles, as specified in subdivision (b) of section 7586 of the Act, unless the department has adopted a substitute program or programs for the centrally fueled fleet program, provided that the substitute program meets the criteria set forth in section 7511a(c)(4)(B) of the Act for administrator approval of such program.

2. Such centrally fueled fleet program shall be developed in consultation with fleet operators, vehicle manufacturers, fuel producers and distributors, and other interested parties taking into account operational range, specialty uses, vehicle and fuel availability, costs, safety, resale value of vehicles and equipment and other relevant factors.

3. Such centrally fueled fleet program shall contain provisions requiring that at least a specified percentage of all new covered fleet vehicles in model year nineteen hundred ninety-eight and thereafter purchased by each covered fleet operator shall be clean fuel vehicles and shall use clean alternative fuels when operating in the covered areas. For the applicable model years (MY) and vehicle types the specified percentages shall be no less than the percentages specified in the following table:

CLEAN FUEL VEHICLE PHASE-IN REQUIREMENTS FOR FLEETS Vehicle Type

MY1998 MY1999 MY2000 Light-duty trucks up to 6000 lbs. GVWR & light-duty vehicles .................. 30% 50% 70% Heavy-duty trucks above 8,500 lbs. GVWR ............................. 50% 50% 50%

4. Such centrally fueled fleet program shall also provide that the choice of clean fueled vehicles and clean alternative fuels shall be made by the covered fleet operator subject to the requirements of this section.

5. Such centrally fueled fleet program shall require fuel providers to make clean alternative fuel available to covered fleet operators at locations at which covered fleets are centrally fueled.