Keep a copy of your passport stored in your hotel room safe
Use well-lit, well-populated ATMs.
Travel insurance can protect you of any un-seen hazards.
Smoking is not allowed in public places
Make advance reservation of hotels, transport and local sightseeing of the city and journey on Trains
Always carry a photocopy of your travel documents i.e. Passport, Visa or Travel Pass and inform the police immediately on the loss any of such documents.
Carry Indian Currency or credit card (useable in India) to clear your miscellaneous service Bills.