Winter weather brings hazardous driving conditions to roads

snow roadAs winter weather brings freezing temperatures, snow, and high winds to regions across the country, Virginia Tech Transportation Institute expert Thomas Dingus says that driving when both visibility and traction are impaired by the weather increases the risk of a crash by 70-80 percent.

Researchers at the Virginia Tech Transportation Institute (VTTI) are able test wintry driving conditions by simulating fog, rain, snow, and ice on the Virginia Smart Roads, which is a state-of-the-art, full-scale, closed test-bed research facility located in Blacksburg, Va.

As noted in his book, Survive the Drive: A Guide to Keeping Everyone on the Road Alive, Dingus says that “bad weather is clearly a time when you need to adapt appropriately to the conditions as the risk of a fatal or injurious crash is much higher during bad weather. Some of this risk is due to traction and momentum, but a large component of this increased risk is also visibility. Stay engaged in the driving task, keep your eyes on the road, and slow down when traction or visibility is limited.”

Safety Tips for Driving on Wintry Roads

Based on VTTI research findings, Dingus offers the following tips for drivers in a very low visibility situation.

  1. Slow down, thinking about how far you can really see and how long it takes your car to stop. You don’t want to drive faster than you can see to stop. This means going slower than you probably think is necessary.
  2. Focus on the road. Actively search for any signs of cars ahead, even though it is not particularly pleasant to stare into a uniform scene of fog or snow. Don’t get distracted and don’t look away from the road.
  3. Turn on your lights, typically on low beam. This helps you see a bit better, but it also makes you more conspicuous to drivers behind you.
  4. Don’t become a target that others can’t see. In general, stay out of the left lane. If you are going really slow or need to stop, turn on your emergency hazards to increase conspicuity for those traveling behind you. Consider moving over to the shoulder if you can, at least until traffic backs up well behind you.

“When traction is low, you have to think a lot about momentum. Momentum is the quantity of motion of a moving object, all mathematically defined as mass (weight) times speed,” says Dingus. “If you are driving in a straight line on very slick roads, your vehicle will tend to keep going straight and remain at the same speed. Steering and braking are much less effective in such a scenario because the traction is so low that the tires don’t grip to exert much force, even if you have a four-wheel-drive truck.”

Dingus offers the following tips for drivers when traction is low.

  1. Control momentum by driving much slower, particularly if the roads are icy.
  2. Planning ahead will also help you. Begin braking gently much farther in advance than you normally would to avoid skidding.
  3. If you are going downhill, drive even slower and begin to slow down even farther in advance because gravity is working to literally pull you down the hill.
  4. The same is true with making a turn. Brake gently way ahead of the turn and slow way down before you have to turn. If you wait too long and brake or steer in the curve at too high of a speed in bad weather, you will go straight, no matter what you do with the steering wheel.

uva basketball team of destiny

Team of Destiny: Inside UVA Basketball's improbable run

Team of Destiny: Inside Virginia Basketball’s Run to the 2019 National Championship, by Jerry Ratcliffe and Chris Graham, is available for $25.

The book, with additional reporting by Zach Pereles, Scott Ratcliffe and Scott German, will take you from the aftermath of the stunning first-round loss to UMBC in 2018, and how coach Tony Bennett and his team used that loss as the source of strength, through to the ACC regular-season championship, the run to the Final Four, and the thrilling overtime win over Texas Tech to win the 2019 national title, the first in school history.

augusta free press


Augusta Free Press content is available for free, as it has been since 2002, save for a disastrous one-month experiment at putting some content behind a pay wall back in 2009. (We won’t ever try that again. Almost killed us!) That said, it’s free to read, but it still costs us money to produce. The site is updated several times a day, every day, 365 days a year, 366 days on the leap year. (Stuff still happens on Christmas Day, is what we’re saying there.) AFP does well in drawing advertisers, but who couldn’t use an additional source of revenue? From time to time, readers ask us how they can support us, and we usually say, keep reading. Now we’re saying, you can drop us a few bucks, if you’re so inclined.

augusta free press
augusta free press news