1. Vehicles and Fuels Low Emissions Choices For Fleets UC, CSU, CCC Sustainability Conference August 1, 2008 Steve Hahn Materials Manager Santa Barbara Metropolitan Transit District

2. GM Allison Hybrid E P System TM

3. Accumulative Hybrid Deliveries 2007

4. Philadelphia (32) Houston (44) Portland (2) Salt Lake (3) Minneapolis (22) Seattle (237) Austin (3) Orange County (2) Newark (4 coach) Norwalk (2) Hartford (2) Louisville (9) Victoria (6) Vancouver (2) Yosemite (18) Stockton (32) Albuquerque (58) Shreveport (1) Indianapolis (2) Charlotte (2) Pittsburgh (6) Springfield (1) Wilmington (2) Honolulu (50) Tampa (4) Aspen (11) Baltimore (10) Brighton (2) Washington D.C. (50) Evansville (5) Buffalo (44) Cleveland (9) Denver (4) Eugene (11) Lansing (10) Ft. Lauderdale (5) Tulsa (1) Sarasota (10) San Juan (14) Rockville (14) Saskatoon (4) Eureka (2) Grand Rapids (2) Humboldt (3) Santa Barbara (8) Las Vegas (42) Syracuse (9) Modesto (1) Lafayette (4) Bloomington (2) Vail (1) Ithaca (6) EESB January 2008 cgc 021808 Reno (2) Albany (11) Madison WI (5) Grand Rapids (5) GM-Allison Hybrid delivery distribution in North American transit buses Chicago (10) Edmonton (2) Avon (1) Chapel Hill (3) Covington KY (4) Duluth (2) ECU NC (1) Flagstaff AZ (2) Franklin TN (1) Ann Arbor MI (15) Hamilton ON (12) Hampton Roads VA (10) Lebanon PA (1) Livermore (1) Lynchburg VA (2) Memphis TN (4) Pittsfield MA (1) St Catharine ON (7) Spokane (3)

5. 64 Million Service Miles accumulated as of December 2007

6. Hybrid Benefits Noise Testing Aspen Colorado Whispr Mode was a s quiet as passenger cars in Aspen

8. Two-Mode Compound Split Parallel Hybrid Architecture Nearly 100% Efficient Mechanical Path Over 90% Efficiency 70% of the time “A” Motor/ Generator DPIM Energy Storage “B” Motor/ Generator

9. EP Motor Architecture Dual AC Induction Motors Planetary Gearsets

10. Series Hybrid Vs Parallel Losses Allison Parallel Hybrid has less Energy Losses = Less Emissions, Fuel and Noise Series Hybrid

12. System Controllers Allison Transmission 1000/2000/2400 Series ™ controller –As used in 2008 Silverado –Mass: 6.7 lb (3.1 kg) total weight for 2 controllers

13. Allison Matsushita/Panasonic NiMH Energy Storage System

14. Dual Power Inverter Module (DPIM) One DPIM includes two inverters 600 Volts nominal DC Mass: 165 lb (75kg)

15. Dual Power Inverter Module (DPIM) 160 kW continuous 3- phase AC output Simply cooled by E V Drive TM cooling circuit SAE J1939 Control Communications

16. 250,000 miles recorded (8 buses are in service) 14-16 hour runs per day 90% availability 22% FE improvement Exhaust temperatures averaging 400 C for regeneration of DPF’s Exhaust backpressures averaging below 2” 10000 mile between propulsion system road calls Rear Brake change interval every 100,000 miles Front Brake change interval every 200,000 miles MTD Hybrid Statistics

17. Fuel Economy Improvement

18. Hybrid Benefits Improved Fuel Economy CBD-14 Fuel Economy

19. Hybrid Benefits Reduced Emissions

20. Urban Bus Emissions (on CBD-14) DieselCNG

21. Thank you ! Steve Hahn Materials Manager Santa Barbara MTD shahn@sbmtd.gov