ALABAMA XA = 8001-12000 lb X1 = 12001-18000 lb X2 = 18001-26000 lb X3 = 26001-33000 lb X4 = 33001-42000 lb X5 = 42001-55000 lb X6 = 55001-64000 lb X7 = 64001-73280 lb X8 = 73281-80000 lb X9 = over 80000 lb T = Trailer TM = Multiyear Trailer   1982 1982 1982   1983 1983 1986   1986 1987 1987   1988 1988 1989   1989 1990 1990   1991 1992 1993   1993 1994 1995   1996 1996 1996   1996 1996 1997   1997 1997 1997   1998 1999 1999   1999 2000 2000   2000 2001 2001   2001 2002 2002   2002 2003 2004   2005 2006