An Ordnance Survey Map produced in 1923 for the Ministry of Transport (MoT).
The MoT classification system was established in 1922/23 to manage the rapid increase in road traffic. These maps were the first to accurately depict the now-familiar road numbering system.
The map series was at a scale of half-inch to one mile.
∶On these maps, "Class I" (main) roads were shown in red, and "Class II" roads were in green.
Cloth backed / dissected.
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