Standard Trailer

Figuring out Trailer plates is a work in progress. Information provided here is a working theory.

First Issue 1926?, most likely earlier, possibly 1921
issued as single plates only


Era 1920's?-1945?
S-prefix for pneumatic tire (air filled)
T-prefix for solid tire



1926

red/white



1927

green/white



1928
black/yellow?



1929
black/white?



1930

"IODINE" vertically on right side
white/black


1935

"APRIL 30" top or "OCTOBER 31" bottom
color variations: red/white; white/red; black/white; white/black
no rhyme or reason known as to color variations

1936


black/yellow



Unknown when S and T prefix ended. Weight without letter prefix were trailer 1937? to 1954?
1944 believed to be a full-size plate (not a strip like passenger)
unknown list of all weight classes


1945
yellow/green



1947

black/yellow



1951

white/black




Weight in tons stacked, followed by "TRA" stacked 1955?-1960?
unknown list of all weight classes
1/2 year known


1955


black/white


1956


black/yellow


1957


white/blue


1958


blue/white


1959


white/blue



Era 1961-1984

Stacked "TRL" prefix


1961


white/red


1962


red/white


1963


white/green


1964

white/black


1965


black/white


1966


white/blue


1967

blue/white


1968

begin reflective letters
white/black


1969

white/blue


1970

"1670 300 YEARS 1970" bottom
white/green


1971

white/brown


1972


white/black


1973


white/blue


1974


white/green


1975


white/maroon


1976

blue/white


1977


red/white


1978


green/white


1979

black/white


1980

blue/white


1981


red/white


1982

"EXP DEC. 31ST 82" top
green/white


1983

"EXP DEC. 31ST 83" bottom
black/white


1984

"EXP DEC. 31 84" top
blue/white



Era 1985-1988
"TL" prefix



1985

"EXP DEC. 31 85" bottom
red/white


1986

"EXP TRAILER 12/31" bottom
green/white


1987

"EXP TRAILER 12/31" bottom
black/white


1988

"EXP TRAILER 12/31" bottom
blue/white



1989-1990

December passenger sticker; 89 non passenger sticker; 90 passenger sticker
red/white


1991

December passenger sticker; 91 non passenger sticker
black/white
1992 no issue; expiration change 12/31/91 to 3/31/93

1993

"EXP TRAILER 3/31" bottom
blue/white


1994

"EXP TRAILER 3/31" bottom
red/white


1995-2015

passenger month/year stickers
green/white


2016-present

passenger sticker
First Issue January 1, 2016. Replacement of previous design upon expiration through 2016