The story
As in many other states of the German Empire, there was increasing debate about how to improve transport communications across the country from about 1825. Private interest groups were formed and, from 1834, the state also worked on the question, giving experts the task of finding suitable solutions. After years of preparatory work, it was decided to set up a railway network, the main lines of which would be built by the state.
The Railway Bill of 18 April 1843, established the legal foundation for the construction of the railway network; this date is seen as the birthday for the K.W.St.E.. The law expressly envisaged that the construction of branch routes by private companies should also be possible. This law was at the same time the impetus for the foundation of the Maschinenfabrik Esslingen ('Esslingen Engineering Works'), that played a decisive role in railway construction and railway technology in Württemberg.
From Wikipedia’s article on Royal Württemberg State Railways, shared under CC BY-SA 4.0.3