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Allocations - where were the vehicles based throughout the years?
Departmental vehicles - those that saw further use in areas such as research, sandite or route learning.
Depots - A look at the depots that had DMU allocations.
Depot/Repair Codes - Demystifing some of the data on the end of vehicles including stannox codes.
Diagrams - (layouts) each vehicle was allocated a diagram number to identify its layout.
Diagrams - (workings) the cyclic daily programmes.
Disposal - the companies responsible for cutting DMUs.
Design Codes - these replaced diagram numbers in 1980.
Lot Numbers
Numerical vehicle index - vehicles listed numerically for easy identification of type.
Set Numbers - some examples from through the years.
TOPS codes - lists all the codes that were originally allocated to unpowered vehicles and later dropped. Also the National Traction Plan details for 1974.
