I reside in Pune which has the largest two-wheelers in India and possibly some of the worst roads too!!!!!I drive a Maruti 800 and it is a harrowing task. My tips would be show the indicator atleast 5 mins before turning so that the vehicles behind you are not obstructed as in my experience , often it has happened that the vehicle ahead suddenly turns right without indicating so and I have to go straight causing a turn on a crowded road cumbersome.
Another tip would be dont incessantly keep bright headlights if u are not on a highway cos it just causes a glare on the other drivers eyes. If you are not planning to turn right DO not be on the right side of a signal as when the signal turns gren your manoueveres are giving others a chance to mouth abuses to u as well as wait for u to make a move!!!