If your car gets stuck along the way, they can send out help along your predetermined route. Keep your gas tank full for emergency use and to prevent the fuel line from freezing. Have your Family Disaster Supplies Kit in the car trunk, along with blankets and a small shovel. Additionally, a small bag of sand or non-clumping cat litter can be used for extra traction if you get stuck. Use the non-clumping cat litter, since the clumping kind turns into slick clay when wet.
Tire chains are helpful.
However, since the use of chains is not permitted in all states, you should check the local regulations before using them. Your local auto club, the state police, or the state department of transportation should have that information. If you don't have anti-lock brakes, pump , don't slam on your brakes. Break only when your car is in a straight position before a curve. Release the break before you steer into a curve.