AAR Interchange dates data


PBowers
 

In 2005 the Steam Freight Car list put together the following data on AAR data. Compiled by Jeff English, it covers 1870 to 1996. The question is what changes have occurred since 1996? I am aware that the list cut off date is 1960 but I feel it is important to keep the list up to date. If the powers that be with the "Great Key" to the moderator jail permit, this could be updated on the list. If not, we can update off list.

Year Change description Source

1870 archbar trucks replace wood beam as US standard White, John H. Jr.
1893 Safety Appliance Act passed (brakes and couplers) White, John H. Jr.
1900 August; all cars required to be equipped with air brakes &
knuckle couplers Thompson, James D.
1909 MCB drops recommendation for "Air Brake" stencil Thompson, James D.
1909 MCB standard MCB-26A to locate reporting marks at left end of
car side Thompson, Anthony W.
1911 Safety Appliance Act amended (ladders, grabs,etc.) Thompson, James D.
1911 United States Safety Appliances Standard stencil introduced
Thompson, James D.
1914 (or 1916?) Steel or steel-framed ends required or recommended on
box cars Neubauer, Eric & Thompson, David
1915 (approx.) All cars to be equipped with compliant ladders, grabs,
etc. Thompson, James D.
1920 Oct 20; ARA issues standards for stenciling reporting marks Wilber, Guy
1925 United States Safety Appliances Standard stencil requirement
discontinued Thompson, James D.
1925 Jan 1; ARA revised dimensional data stencil standards in effect
Gilbert, Tim
1925 May 1; nominal capacity & load limit stencils required Wilber, Guy
1927 April 7; load limit star stencil recommended, when limit is not
bearings Wilber, Guy
1928 wood draft sills banned from interchange Hendrickson, Richard
1933 August 1; Type E or F couplers required on all newly-built cars
1933 August 1: rotary uncoupling levers required on all newly-built
or newly-rebuilt cars
1933 September 1; AB brakes required on all newly-built cars
Hendrickson, Richard & Wilber, Guy
1934 October 12; AAR created by merger of ARA with Assn of Ry
Executives and Bureau of Ry Economics English, Jeff; from Weekly Rail Review
1935 January 1; revision of ICC accounting rules defining
repaired/rebuilt equipment Wilber, Guy
1936 January 1; Initial proposed ban of arch bar trucks (eventually
extended to 1940) Wilber, Guy
1937 January 1; AB brakes required on all newly-rebuilt cars Wilber, Guy
1937 January 1; geared handbrakes required on all newly-built or
newly-rebuilt cars Wilber, Guy
1937 August 1; revision of AAR Interchange Rules defining
repaired/rebuilt equipment Wilber, Guy
1937 August 1; Type E or F couplers required on all newly-rebuilt
cars Westerfield, Al
1937 Most billboard markings gone off boxcars and reefers Westerfield, Al
1938 No billboard boxcars and reefers Westerfield, Al
1939 December 31, arch bar trucks banned except 6 mo. for returning
empties Wilber, Guy
1940 July 1; arch bar trucks banned from interchange Wilber, Guy
1945 wood running boards outlawed on new cars O'Connor, Tim
1946 Jan 1; weld-repaired T- or L-section truck sideframes not to
applied Wilber, Guy
1948 Plate B maximum height 15-1 adopted 1948 ORER
1949 Jan 1; first proposed deadline for banning T- and L-section
trucks Wilber, Guy
1949 Reweighing box, stock, reefer after 1st 30 mos, then every 48
Nehrich, John
1950 Aug 1; I-section trucks added to proposed ban of T- and
L-section trucks Wilber, Guy
1953 July 1; K brakes banned, except tank cars & returning empties Kelly, Bill
1953 October 1; K brakes banned for tank cars & returning empties,
except for tank empties Kelly, Bill
1954 January 1; K brakes banned for all cars, including returning
tank empties Kelly, Bill
1957 January 1; final deadline for ban on T-, L- and I-section truck
sideframes Wilber, Guy
1957 trucks w/integrally-cast journal boxes required in interchange
Hendrickson, Richard
1958 January 1; cast iron wheels prohibited on new or newly-rebuilt cars
1959 January 1; Allied Full-Cushion truck banned due to derailments Wilber, Guy
1963 Plate C maximum height 15-6 adopted
1966 April 1; federal ban on running boards for new cars ordered
after Kaminski, Ed
1966 Summer, late; low mount hand brake std on most cars blt from
this time Eager, Jim
1966 Oct 1; federal ban on running boards for new cars delivered Kaminski, Ed
1967 Jan 1; high mount hand brakes prohibited on new cars Eager, Jim
1968 ACI labels introduced O'Connor, Tim
1970 January 1; initial proposed date to require ACI labels in
interchange Ruffing, James
1970 cast iron wheels banned from interchange (before Jan 2 1970)
Neubauer, Eric
1970 No underframes over 50 years (blt before Jan 2 1970?) Neubauer, Eric
1972 Final date for ACI labels required in interchange Ruffing, James
1972 Roller bearings required for all cars w/6-1/2x11 journals Eager, Jim
1972 AAR recommends single-panel COTS stencil, for new & rblt cars Eager, Jim
1974 Jan 1; running boards to be removed from all cars (extended) Kaminski, Ed
1974 Cars w/axle load >55,000 lbs must have roller bearings Eager, Jim
1974 No underframes over 40 years if blt before July 1, 1974 Matthews, Jim
1974 No underframes over 50 years if blt beginning July 1, 1974 Matthews, Jim
1974 Plate E maximum height 15-9 adopted 1974 ORER
1974 Plate F maximum height 17-0 adopted 1974 ORER
1974 Two-panel COTS stencil required by FRA, all cars Eager, Jim
1975 Plate H maximum height 20-2 established (after 1975?) Eager, Jim
1978 white dot/yellow dot wheel inspection begins Chatfield, D. Scott
1978 January 1; ACI labels no longer required for interchange Ruffing, James
1981 white dot/yellow dot wheel inspection ends Chatfield, D. Scott
1982 third version COTS, Jan 1 1982 Eager, Jim
1983 Dec. 31, running boards outlawed on all boxcars/reefers
Chatfield, D. Scott
1989 CAPY data stencil no longer required Chatfield, D. Scott
1991 plain-brg trucks banned from interchange Kaminski, Ed
1994 plain-brg trucks converted to roller-brg banned from interchange
Kaminski, Ed
1996 AEI "FET" tags required on interchange cars O'Connor, Tim

note: banned from interchange means AAR Interchange Rules
outlawed means prohibited by federal law or regulation backed by law

Any updates, corrections or omissions to the list would be appreciated.(subject to moderator approval)

Peter Bowers



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