OIT - British D-type open container (1-148)

OIT - Origin of intermodal transport, earlier British road-rail container

The D-type was the larger open container type within the pre-ISO containers, used within the British railways. Developed out of private swap vans the standardization within these earlier containers was not that strong, but over the time some standard designs were defined by the RCH (Railway Clearing House), an institution taking care for interoperation between the different railways. By that reason by far the majority D-type containers of the Big4-railways look so familiar. There were other types, like the DX-one (a version without side doors), but the wooden type presented here was the most common one.
486 were built by London Midland and Scottish Railway (LMS) in three different LOT’s (946, 1481 and 1532) in 1936 - 1947. They differ a little from other ones missing the centre strap at the back end.
385 were built by the London North Eastern Railway (LNER) in the 1930s as under Diagram 28.
35 were built by the