TENNESSEE First Letter: Class Second Letter: Weight B = Bus H = Hire Truck M = Moving Van S = Joint (Farm/Commercial) P = Private Truck S,T (suffix) = Semi-trailer A thru L = 9000 lbs M,N,O = 16000 lbs P,Q = 20000 lbs R,Z = 26000 lbs S = 32000 lbs T = 38000 lbs U = 44000 lbs V = 56000 lbs W = 66000 lbs X = 74000 lbs Y = 80000 lbs   1974 1975 1976   1976 c.1976 SEMI-TRAILER 1977   1977 1977 1978   c.1978 SEMI-TRAILER 1979 c.1979 SEMI-TRAILER   1980 1981 1982   1983 1984 1984   1985 1987/88 1988/89   1990 SEMI-TRAILER 1991 1992   1993/94 c.1994 1995   1995 SAMPLE 1996 1997   1999 2000 2001 SAMPLE   2002 2003 2004