Table 1,,,, Active Interstate Motor Carriers by Fleet Size: 2000,,,, Fleet size,Number of carriers,,, (number of,Hazardous,Passenger,, power units),materials,carriers,All others,Total 1,"9,083","5,927","204,269","219,279" 2–6,"17,249","4,535","139,021","160,805" 7–20,"9,028","1,470","32,058","42,556" 21–100,"5,194",832,"9,799","15,825" "101–5,000","1,644",147,"1,417","3,208" "Over 5,000",17,1,8,26 Unspecified,"1,410","2,360","80,587","84,357"  Total,"43,625","15,272","467,159","526,056" NOTE: Data include intrastate hazardous materials carriers.,,,, "SOURCE: U.S. Department of Transportation, Federal Motor Carrier Safety Administration, Motor Carrier Management Information System Report, LS50B901 (Washington, DC: March 2000).",,,,