Survival planning is nothing more than realizing something could happen that would put you in a survival situation and with that in mind, taking steps to increase your chances of survival.
Thus, survival planning means preparation. Preparation means having survival items and knowing how to use them. People who live in snow regions prepare their vehicles for poor road conditions. They put snow tires on their vehicles, add extra weight in the back for traction, and they carry a shovel, salt and a blanket.
Another example of preparation is finding the emergency exits on an aircraft when you board it for a flight. Preparation could also mean knowing your intended route of travel and familiarizing yourself with the area. Finally, emergency planning is essential.