Jeep safaris are organized in the reserves and these are available locally. You can go for safari on the registered vehicles as private vehicles are not allowed in almost all of the reserves.
The jeeps are accompanied by a forest guide which is compulsory, and the seating capacity is limited to six visitors.
For enhancing your experience and tracking tigers effectively you will need the help of a naturalist usually at the service of the hotel you are staying at. Though some of the forest guides are good, the naturalist is a more reliable help with enhanced knowledge of the ecosystem and ability to track the big cats. He or she may have working knowledge of photography as well and guide you in the efforts. The naturalist can be a factor for big success.
The park rides are bumpy and animals may surprise you so be in communication with the driver ...and he should know when to stop. Basic English is understood by all in India and that should help.
Prior to entry in the park your passport will be checked each and every time while the locals will have to show their photo identity. Hence always carry them.
Minor arrangements can be made on the jeeps for aiding you in camera operations.
Carry minimum equipment to save space and increase maneuverability. Long lenses are not at all required in most of the parks. Flashlight is also banned so be light. But do carry binoculars.
Jeeps carry breakfast and water for the morning ride as supplied by your hotel. Usually you are required to carry your own water supply.