A map of the Bombay, Baroda & Central India system of 3852 route miles as it existed in 1929. This comprised two main trunk lines, the broad gauge from Bombay to Muttra Junction and the metre gauge from Ahmedabad to Delhi, along with the various branches.

In 1929 the Bombay, Baroda & Central India Railway was the largest privately owned system in India and the fourth largest behind the state owned systems; the North Western, East Indian, and the Great Indian Pebinsular in third place at 3857 route miles. The BBCIR mileage at this time was made up of 1230 broad gauge, 2459 metre gauge and 163 miles of 2ft 6in gauge feeder lines.