Georgia license plate weight codes (non-passenger)

1929-1940:
plates marked "TRUCK" "TRAI" or "BUS", normally with weight stamped in the plate.
  Known weights: 1/2   1   11/2   2   3   5 ton for truck and trailer,
   sometimes with a letter (unknown letter meanings)

1941-1970:

Codes for Trucks and Trailers are very confusing.
Below are codes known, and years verified (only covers years 1941-1970). *CC=county code

A Bus < 10,000 lbs
A/A Private/Commercial Truck, not for hire < 5 ton [verified 1941,1957]
A/B Private/Commercial Truck, not for hire < 1 ton [verified 1949,1951-1955,1957-1959]
A/C Private/Commercial Truck, panel truck [verified 1941,1951-1953,1957-1959]
A/D Private/Commercial Truck, not for hire < 11/2 ton [verified 1944,1950-55,1957-59]
A/H Private/Commercial Truck, not for hire < 2 tons [verified 1952,1957-1959]
A/J Private/Commercial Truck, not for hire < 21/2 ton [verified 1958]
A/K Private/Commercial Truck, not for hire < 3 tons [verified 1957-1959]
A/L Private/Commercial Truck, not for hire < 31/2 ton [verified 1957-1959]
A/N Private/Commercial Truck, not for hire < 4 ton [verified 1956-1959]
A/P Private/Commercial Truck, not for hire < 1/2 ton [verified 1947-1959]
A/R Private/Commercial Truck, not for hire < 7 ton [verified 1958-1959]
A/X Private/Commercial Truck, not for hire < 6 ton [verified 1959]
A/T Trailer < 1,000 lbs [verified 1960-1970 with CC, 1961 no CC]
B Bus 10,000 - 15,000 lbs
B (vertical TRAI) [verified 1949,1951,1952]
B/A Commercial Truck for hire < 1/2 ton [verified 1957]
B/B Commercial Truck for hire < 1 ton [verified 1957-1959]
B/C Commercial Truck for hire < 11/2 ton [verified 1956,1958]
B/D Commercial Truck for hire < 2 ton [verified 1956-1960]
B/H Commercial Truck for hire < 21/2 ton [verified 1960]
B/J Commercial Truck for hire < 3 ton [verified 1958-1960]
B/K Commercial Truck for hire < 31/2 ton
B/L Commercial Truck for hire < 4 ton [verified 1957-1959]
B/N Commercial Truck for hire < 5 ton [verified 1959]
B/P Commercial Truck for hire < 6 ton [verified 1957]
B/R Commercial Truck for hire < 7 ton [verified 1960]
B/S Commercial Truck for hire < 8 ton [verified 1958]
B/T Commercial Truck for hire > 8 ton; Trailer > 1,000 lbs [verified 1942, 1964-1970]
C Bus 15,000 - 20,000 lbs
C/T Car Trailer < 1,000 lbs [verified 1944,1947,1950,1953-1958,1960]
D Bus > 20,000 lbs [verified 1963 no CC,1966 no CC]
E/A Commercial Trailer not for hire < 1,000 lbs [verified 1957]
E/B Commercial Trailer not for hire < 1,500 lbs [verified 1958]
E/C Commercial Trailer not for hire < 3,000 lbs [verified 1957-1959]
E/D Commercial Trailer not for hire < 4,000 lbs [verified 1941,1958]
E/H Commercial Trailer not for hire < 5,000 lbs [verified 1959-1960]
E/J Commercial Trailer not for hire < 6,000 lbs [verified 1957-1960]
E/K Commercial Trailer not for hire < 7,000 lbs [verified 1958]
E/L Commercial Trailer not for hire < 8,000 lbs [verified 1957-1959]
E/N Commercial Trailer not for hire < 9,000 lbs [verified 1958]
E/P Commercial Trailer not for hire < 10,000 lbs [verified 1957]
E/S Commercial Trailer not for hire < 14,000 lbs [verified 1948,1950-1954]
E/Y Commercial Trailer not for hire < 12,000 lbs [verified 1957,1960]
E/V Commercial Trailer not for hire > 14,000 lbs [verified 1956-1959]
F/A Commercial Trailer for hire < 1,000 lbs [verified 1958]
F/B Commercial Trailer for hire < 1,500 lbs [verified 1959]
F/C Commercial Trailer for hire < 3,000 lbs [verified 1957-1958]
F/D Commercial Trailer for hire < 4,000 lbs [verified 1959]
F/H Commercial Trailer for hire < 5,000 lbs [verified 1957-1959,1955 with TRAI vertical]
F/J Commercial Trailer for hire < 6,000 lbs [verified 1958]
F/K Commercial Trailer for hire < 7,000 lbs [verified 1959-1960]
F/L Commercial Trailer for hire < 8,000 lbs [verified 1951,1956 with TRAI vertical]
F/N Commercial Trailer for hire < 9,000 lbs [verified 1958-1960]
F/P Commercial Trailer for hire < 10,000 lbs [verified 1957]
F/Y Commercial Trailer for hire < 12,000 lbs [verified 1957]
F/S Commercial Trailer for hire < 14,000 lbs [verified 1959]
F/V Commercial Trailer for hire > 14,000 lbs [verified 1958]
F/T Farm Trailer [verified 1962,1964,1970 with CC]
H/B Commercial Truck/Tractor for hire [verified 1956]
H/F Commercial Truck/Tractor for hire 24,001 - 30,000 lbs [verified 1961,1970 no CC]
H/C Commercial Truck/Tractor for hire [verified 1956]
H/G Commercial Truck/Tractor for hire 30,001 - 36,000 lbs [verified 1961,1970]
H/H Commercial Truck/Tractor for hire 36,001 - 44,000 lbs [verified 1961,1970]
H/I  Commercial Truck/Tractor for hire 44,001 - 52,000 lbs [verified 1961,1970]
H/J Commercial Truck/Tractor for hire 52,001 - 63,280 lbs [verified 1956,1961,1970]
H/K Commercial Truck/Tractor for hire > 63,281 [verified 1958,1970 no CC]
H/L Commercial Truck/Tractor for hire [verified 1956]
H/N Commercial Truck/Tractor for hire [verified 1956]
P State Patrol [verified 1941,1970]
P/D Truck/Tractor not for hire 14,001 - 18,000 lbs [verified 1961,1962,1964,1965,1968,1970]
P/E Truck/Tractor not for hire 18,001 - 24,000 lbs [verified 1961,1964,1966-1968,1970]
P/F Truck/Tractor not for hire 24,001 - 30,000 lbs [verified 1961,1970; 1964 no CC]
P/G Truck/Tractor not for hire 30,001 - 36,000 lbs [verified 1961,1964]
P/H Truck/Tractor not for hire 36,001 - 44,000 lbs [verified 1961,1963,1964]
P/I Truck/Tractor not for hire 44,001 - 52,000 lbs [verified 1961,1964,1970]
P/J Truck/Tractor not for hire 52,001 - 63,280 lbs [verified 1961,1964,1970]
P/K Truck/Tractor not for hire > 63,281 lbs [verified 1964,1970]
R Private Truck < 6,000 lbs [verified 1961-1970 with CC]
S/P State Patrol [verified 1948]
T Trailer/Semi Trailer [verified 1966,1970 with CC; 1961 no CC]
U Ambulance/Hearse [verified 1963 no CC; 1964,1968,1970]
W Private Truck/Tractor 6,001-10,000 lbs; Farm Vehicles [verified 1961,1964,1969,1970 with CC]
X Private Truck/Tractor 10,000 -14,000 lbs [verified 1964,1968,1969]