The Traffic Police is a semi-autonomous body under the Mumbai Police. Each zone is commanded by a Deputy Commissioner of Police (DCP).
Apart from the 12 zones, there is also an additional Port zone.
After the cementing of English Rule in India after the 1857 war of Indian Independence, in 1864, the three Presidency towns of Bombay, Calcutta and Madras were given Commissioners of Police.
On 14 December 1864, Sir Frank Souter was appointed the first Police Commissioner of Bombay.
After independence, many changes to the Mumbai Police were instituted. New vehicles, guns and electronic equipment were procured for police use.The Tourist Squad was also created to patrol the beaches of Mumbai.