PRIVATE
possible that buses used "G" prefix before 1940 (G is normally passenger >4,500 lbs.) First Issue 1940 issued in pairs through 1974 marked "BUS" vertically through 1985?1987? "BU" prefix 1986?1988?-present  yellow/black  black/yellow 1942 (pair) yellow/black 1943 (single) yellow/black 1944 (single) believed to be a full-size plate (not a strip) yellow/green  yellow/green (April) green/yellow (no month = October exp) 1946 (pair) silver/black 1947 (pair) black/yellow 1948 (pair) yellow/black 1949 (pair) white/black  black/white 1951 (pair) white/black 1952 (pair) yellow/black 1953 (pair) black/yellow 1954 (pair) white/black 1955 (pair) black/white 1956 (pair) black/yellow 1957 (pair) white/blue 1958 (pair) blue/white 1959 (pair) white/blue 1960 (pair) blue/white 1961 (pair) red/white  white/red 1963 (pair) white/green 1964 (pair) white/black  black/white  white/blue  blue/white  begin reflective letters white/black 1969 (pair) white/blue  "1670 300 YEARS 1970" white/green  white/brown  white/black  white/blue 1974 (pair) last year for pairs white/green  white/maroon  "1776 Bicentennial 1976" top blue/white  red/white  green/white  black/white  blue/white  red/white  "EXP. DEC. 31st 82" top green/white  "EXP. DEC. 31st 83" bottom black/white  "EXP. DEC. 31st 84" top blue/white  "EXP. DEC 31 85" bottom red/white  green/white 1987 black/white  "EXP. BUS 12/31" bottom blue/white   stickered; 1989 non-pass; 1990 passenger sticker 2 variations: embossed border, no border red/white 
stickered; 1991 non-pass; 1992+ passenger sticker
black/white transition to flat circa 2013, changeover to stacked "B/U" prefix late 2013   full replacement through 2016
stickered; "B/U" stacked prefix black/white | COMMON CARRIER Common Carrier = commercial or "pay to ride" First Issue 1952? Abbreviated "SC" for South Carolina through 1965 Issued in pairs through 1974 marked "COMMON CARRIER" through 1965; marked "C/C" 1966-present marked "BUS" vertically through 1985?1987?; "BC" prefix 1986-present 1/2 year issues marked "4/30" 1952?-1965, "APRIL 30" 1966-1969?? 1/2 year issued marked "MAY 15th" 1972?-???? Common Carrier believed to begin 1952     
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APPORTIONED
little information
considered Common Carrier
"BC" prefix.
believed to start at number 7000 not to conflict with regular CC Bus
