... 2000a.02468101214197019801990200020102020ActualuseClass 3–8 trucks Class 1–2 trucks(pickups, vans,SUVs)AutomobilesProjecteduseEnergy Use (millions of barrels per day) Year supplant the current Tier 1 emission standards. Tier ... 1999.05001,0001,5002,0002,5001980198219841986198819901992199419961998 Year 0150300450600750Class 8 trucksClass 7 trucksClass 8 Trucks (in thousands)Class 7 Trucks (in thousands)FIGURE 1-2 Number of Class 7 and 8 trucks in use, 1982–1997. Source: Eberhardt, 2000a.02468101214197019801990200020102020ActualuseClass ... definition of light-duty trucks varies in the transportation literature: somedata sources use 8,500 lbs as a maximum; others use10,000 lbs as a maximum.Sales of light-duty trucks have increased very...