(CNN) With whiteout conditions predicted starting Friday as part of a strong winter storm poised to wallop a long stretch of the East Coast, officials warn drivers in affected areas to avoid getting on roads this weekend unless it is absolutely necessary -- and to practice extreme caution if they do.
That's because snow, sleet and freezing rain may blanket cars, ice over roads and hamper visibility.
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Driving in a snowstorm is difficult. Add with wind gusts -- nearing hurricane intensity in some places -- and poor visibility, and travel can become downright dangerous.
Here's a short guide to driving safely in winter weather:
If motorists have any problems with their car's battery, brakes, heating and cooling system or ignition system, they should try to stay off the roads.
For those who must go out, it's important to plan.
The AAA recommends motorists pack a winter driving kit that includes:
• A bag of abrasive material (sand, salt or cat litter), a snow shovel and traction mats
• An ice scraper and window washing liquid
• Booster cables
• A flashlight and warning flares or triangles
• A cell phone and charger
• An extra set of gloves and a blanket
• Emergency food supplies such as power bars or beef jerky -- and sufficient water.
Motorists should also have at least half a tank of fuel before venturing out, the AAA says, and should make sure tires are properly inflated.
Iced-over vehicles can limit driver visibility, and ice flying off cars can be hazardous to fellow drivers, so deice vehicles before driving.
The AAA suggests drivers clean their windows and windshield, replace their window wiper blades if they're leaving streaks and clean all snow and ice from their hood, roof, trunk, lights and windows.
Drivers should warm their car's engine for a few minutes before hitting the road.
When driving in conditions with low visibility, motorists should proceed slowly with their headlights on low beam, the AAA advises.
The AAA also recommends drivers avoid stopping if possible. Instead, motorists should drive slowly so their car keeps rolling without requiring a full stop.
Steering around an obstruction is often safer than braking suddenly at speeds above 25 mph on a slippery surface, according to AAA's pamphlet, "How to Go on Ice and Snow."
When motorists do brake, they should not remove their foot from the brake or pump the pedal if they have anti-lock brakes, the AAA advises. Drivers that don't have anti-lock brakes should keep their heel on the floor and apply firm pressure to the brake pedal to the threshold of locking.
In case of skidding, drivers are advised to steer in the direction they want the front of the car to go, keeping their eyes on the travel path. They should not slam on the brakes -- that's likely to make it harder to regain control.
Additionally, the AAA suggests drivers avoid cruise control when driving on slippery surfaces.
Drivers should try to ease their vehicle out of parking spaces without spinning the wheels. Drive back and forth for several feet in either direction to clear a path, the AAA advises, and spread sand or salt near the wheels if additional traction is needed.
To safely brake if necessary on ice or snow, the AAA advises drivers increase following distances to 8 to 10 seconds.
On highways, drivers should not change lanes often, as they can lose control driving over snow that gathers between lanes.
When driving on hills, drivers should stay as far from other vehicles as possible so they don't have to stop while maneuvering around cars that are stuck.
This will allow drivers to gently speed up when they're near the bottom of the hill, the AAA says.
Motorists should drive downhill extremely slowly and try not to use the brakes. When it's necessary, however, drivers should brake gently so they don't lose control.