Winter Driving Tips   Have antifreeze, battery, heater, defroster and windshield wipers checked. Install snow tires and make sure they are in good condition. Carry jumper cables. Carry a small shovel, a bag of salt or sand, and emergency tire chains. Keep your gas tank at least half full at all times. Clean all the snow off of your car, including head and tail lights, before you drive. Keep a safe distance between your vehicle and the car in front of you. Travel during winter storms may take twice the normal driving time; plan accordingly and drive safely. Slow down before you have to stop, especially when approaching an intersection. Come to a stop by carefully and lightly pumping your brakes. If you are caught in traffic, remember to reduce the use of accessories such as your radio, to minimize the drain on the battery.