1. NITROGEN TIRE PRESSURE MAINTENANCE PROGRAM FOR GOVERNMENT FLEET EXPO

2. Why Use Nitrogen? Why Use Nitrogen? 40% of passenger cars and 45% of trucks/suv/vans have at least one tire that is under inflated by 6% (National Highway Transportation Safety Commission) As many as 85% of motorists do not check their tire pressure properly. (Rubber Manufacturers Association, February 2003 Survey) The Problem is Under Inflation

3. Why Use Nitrogen? Why Use Nitrogen? US can save 4 MM gal/day of gas by properly inflating tires - US Department of Energy US can save 4 MM gal/day of gas by properly inflating tires - US Department of Energy Improve gas mileage by around 3.3 percent by keeping tires inflated to the proper pressure - DOE & EPA website Improve gas mileage by around 3.3 percent by keeping tires inflated to the proper pressure - DOE & EPA website Fuel efficiency reduced by ~1% for every 3 psi of under inflation - NHTSA Fuel efficiency reduced by ~1% for every 3 psi of under inflation - NHTSA About 90% of tire failures causing tire road debris is caused by underinflation - TMC Tire Air Pressure Study, May 2002 About 90% of tire failures causing tire road debris is caused by underinflation - TMC Tire Air Pressure Study, May 2002 Under Inflation Causes Energy & Safety Issues

4. Fact : N 2 Permeates Slower Retains Tire Pressure Longer Oxygen leakage rate is 4 times that of Nitrogen N 2 Permeability (cm3 STP-cm/(cm2-sec-cm Hg)): 0.32E-10 O 2 Permeability (cm3 STP-cm/(cm2-sec-cm Hg)): 1.3E-10 Tire Inside Nitrogen Molecules Oxygen Molecules Tire Rubber Wall Tire Outside

5. What Can Nitrogen Do For Your Fleet? What Can Nitrogen Do For Your Fleet? Improves fuel efficiency by 2 - 6% Improves fuel efficiency by 2 - 6% Lowers Carbon emissions 20 lbs/gal. of fuel Lowers Carbon emissions 20 lbs/gal. of fuel Lowers annual tire expense by 20% Lowers annual tire expense by 20% Improves fleet safety Improves fleet safety Low investment / High return Low investment / High return

6. Nitrogen & Federal Block Grant Energy Efficiency & Cleaner Environment Reduce Fuel Consumption Reduce Fuel Consumption Reduce Smog Emissions Reduce Smog Emissions Reduce Greenhouse Gases Reduce Greenhouse Gases Reduce pressure on our landfills Reduce pressure on our landfills Creates New US Jobs

7. Annual Benefits based on 3 months of actual field data Fuel Savings 75,600 gal $ 302,400 Tire Savings 50 tires $ 20,800 CO2 Reduction 1,512,000 lbs ??? Fleet : 285 buses Mileage 25,000 miles/year Fuel cost @ $4.00/gal 2.5% savings Tire life 3 years 10% less wear Tires $..../mile (not shared) CO2 Reduction 22 lbs/gal Gas Savings: http://www.fueleconomy.gov/feg/maintain.shtml Tire life: http://www.bridgestonetrucktires.com/us_eng/real/magazines/03v8iss3/ra8.asp CO2 Reduction: http://www.epa.gov/otaq/consumer/f00013.htm Projected Economics NYC Transit – “Flatbush Depot”

8. PurigeN98 System Operation Converting from Air to Nitrogen

9. PurigeN98 GeneratorTire Machines Nitrogen Supply HeaderNitrogen Hose / Bay Advantage: PurigeN98 service available in all bays & tire machines Whole Shop Installation Multiple Bays & Tire Machines

10. THANK YOU!