1) First of all, be prepared. Before you ever find yourself in this situation, make yourself an emergency kit in your vehicle. A good rule of thumb to follow when creating an emergency kit is to make sure you have enough supplies to last for 72 hours (check out this emergency kit list for ideas). In addition to this kit, you should also make sure you have jumper cables and extra gas.
2) Try to make it out. Without putting too much strain on your engine, see if it is possible to give your car the extra boost it needs to get out. It also may be possible that your car needs the assistance of somebody also pushing the car.
3) If possible, contact somebody. Use your cell phone to first contact the authorities to let them know you need assistance. In addition, let family members know where you are as well.
4) Ration out supplies. Once you are settled in, it is time to look at the supplies you have on hand and divide them out between all of the people in the vehicle.
5) Run the engine intermittently. Run your engine around 15 minutes every hour. This will help keep your car warm, but won’t expose you to a deadly buildup of carbon monoxide and also will help save gasoline.
6) Leave the dome light on. Not only will this help you see inside the car, it will help people passing by see your car more easily. If you are not able to start the car, however, be aware that the dome light will drain the battery, and only use it when absolutely needed.
7) Keep moving. It is important to avoid getting frostbite. Keep moving by constantly wiggling your fingers and toes. This will help your circulation.
8) Share body heat. If there are other people in the car, huddle together. The shared body heat will keep you warmer.
9) Tie a bright colored cloth to your antenna to help make your car more noticeable.
10) Most importantly, stay calm. We know this is easier said than done, but it will make your time stranded much more manageable. Staying calm and clear header will allow you to think more clearly to be able to decide your next move.