| FM | Ordinary flat car for general service.
Has flooring laid over sills and without sides or ends
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| FC | Flat car equipped to carry Trucks or Trailers for transportation of freight.
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| FD | Flat car of special construction
having the portion of the floor between the
trucks depressed to provide necessary headroom
for certain classes of lading.
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| FG | Flat or gun truck car for special transportation
of heavy ordnance or other heavy commodities.
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| FW | Flat well hole car for special transportation of
plate glass, etc. Flat car with a hole in the middle
allowing lading to be dropped down on account
of clearance problems.
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| FB | Flat car having skeleton superstructure, suitable
for carrying barrels, known as a "Barrel Rack Car".
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| FL | Flat Logging car or logging truck.An ordinary flat car
or car consisting of two trucks fitted with cross
supports over truck bolsters; the skeleton
connected by a skeleton of flexible frame and logs
loaded lengthwise on cross supports.
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| LF | Flat car equipped with one or more demountable
containers for the transportation of liquids or other
commodities not under refrigeration.
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| LFA | Flat car equipped with a container or containers
for the purpose of transporting commodities
immersed in liquids or gases.
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| LP | Open top car having solid bottom and fixed ends
(either slatted or solid) , without running boards
having guard rails. Suitable for handling pulpwood.
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