These plates were used on trucks and big rigs from the 1920's to 2001.

Any truck that had the possibility of traveling through Oregon needed one of these plates, so they were quite common.
Late 1920s
1933
1930s
1940s • White/Green
1940s • Black/Orange
1940s • White/Blue
1940s • Black/Yellow
1940s • White/Black
1947
1956-57
1958-59
1960-61
1962-63
1964-65
1966-67
1968-69
1970-71
1972-73
1974-75
1976-77
1978-79
1978-79
1980-81
1982-83
1984-85
1986-87 • TYPE 2
1988-89 • TYPE 1
1988-89 • TYPE 2
1988-89 • TYPE 1
1990-91
1992-93
1993
1994
1995
1996
1997
During the 1997 issue, the legend changed to "D.O.T."
1997
1998
1999
2000
2001
These plates were no longer required after 2001.   The "TRUSTED CARRIER" plates came into use at this point.
TRUSTED CARRIER