If a blizzard traps you in the car:
- Pull off the highway. Turn on hazard lights and hang a distress flag from the radio antenna or window.
- Stay in your vehicle where rescuers are most likely to find you. Do not set out on foot unless help or a safe structure is visible within 100 yards. Run the engine and heater about 10 minutes each hour to keep warm. When the engine is running, open a downwind window slightly for ventilation, turn on the interior light, and periodically clear snow from the exhaust pipe. This will protect you from possible carbon monoxide poisoning.
- Clap your hands and move your arms and legs occasionally to maintain body heat, but avoid overexertion. In extreme cold, use road maps, seat covers, and floor mats for insulation. Huddle with passengers and use your coat for a blanket.
- Take turns sleeping. One person should be awake at all times to look for rescue crews.
- Eat regularly and drink ample fluids to avoid dehydration.