kingdom of Travancore in the south served as lines of communication during wars. From the early 20th century onwards, bullock-carts and horses were gradually replaced by bicycles and motor vehicles, while motor buses were the main means of private road transportation. Presidency Transport and the City Motor Service were pioneers, operating buses manufactured by Simpson and Co. as early as 1910. The first organised bus system in Madras city was operated by Madras Tramways Corporation between 1925 and 1928. The 1939 Motor Vehicles Act imposed restrictions on public-owned bus and motor services. Most of the early bus services were operated by private agencies. The first organised initiative for the construction of new roads and maintenance of existing roads in the Presidency was initiated in 1845 with the appointment of a special officer for the maintenance of main roads. The principal roads under the aegis of the officer were the Madras-Bangalore road, Madras-Trichinopoly road, Madras-Calcutta road, Madras-Cuddapah road and the Sumpajee Ghaut road. A Public Works Department was initiated by Lord Dalhousie in 1852 and subsequently in 1855 an East coast canal was constructed for the purpose of easy navigation. Roadways were handled by the Public Works Secretariat which was under the control of the member of the Governor's Executive Council. The principal highways of the Presidency were the Madras-Calcutta road, the Madras-Travancore road and the Madras-Calicut road. By 1946–47, the Madras Presidency had of metalled roads and of unmetalled roads, and of navigable canals. The first railway line in South India was laid between Madras and Arcot, which was opened for traffic on 1 July 1856. The line was constructed by the Madras Railway Company formed in 1845. The railway station at Royapuram, the first in South India, was built in 1853 and served as the headquarters of the Madras Railway Company. The Great Southern of India Railway Company was set up in the United Kingdom in 1853. and had its headquarters at Trichinopoly where it constructed its first railway line between Trichinopoly and Negapatam in 1859. The Madras Railway Company operated standard or broad-gauge railway lines while the Great South Indian Railway Company operated metre-gauge railway lines. In 1874, The Great Southern Indian Railway Company merged with the Carnatic Railway Company (established in 1864) and was renamed the Southern Indian Railway Company. The Southern Indian Railway Company merged with the Pondicherry Railway Company in 1891 while the Madras Railway