Make sure all shields and guards are in place and avoid stepping over rotating shafts. Loose belts, buckles and drawstrings can easily be caught in moving or rotating equipment. Stay with your car, don't over exert, put bright markers on antenna or windows and shine dome light, and, if you run your car, clear exhaust pipe and run it just enough to stay warm. Regular maintenance is essential. Make sure your vehicle is working properly.
Proper jump starting - Batteries give off hydrogen gas.
Improper jump-starting can lead to a battery explosion. Make sure the vehicles are not touching each other. Wear protective eyeglasses. Keep flames, cigarettes and jewelry away from the battery. Turn off the ignition of both vehicles before connecting the jumper cables to either vehicle.