Melting snow in the Midwest and torrential rains in parts of the southeast this spring are causing creeks and rivers to overflow their banks and create some very hazardous driving conditions. More than half of flash flood deaths are auto related. Before you go out in these conditions it's a good time to review the hazards of flooded roads and steps you should take to avoid them or, in the worst scenario, to escape from a flooding situation. Here are some important facts about to remember about flooding:

Every flood is dangerous to drivers. Even if the water running across the road appears shallow, what you can't see under the rushing water is the greatest hazard of all. The road could be washed out and the water may be much deeper than you realize. Even if it appears intact, the roadway could collapse under the weight of your vehicle.

Less than an inch of water can cause a driver to lose control.

As little as six inches of rushing water has enough force to push your car off the road.

Your car can float in as little as two feet of water and you could be washed away into a flooded stream or river.

In hilly or mountainous areas, flash floods can occur long after the rain has stopped and far away from the site of a rain storm.

The force of rushing water and debris can be strong enough to cause bridges to collapse.

Summer thunderstorms can dump one to two inches of rain in a very short time.

Flood waters can rise at a rapid rate.

What should you do to avoid flooded roadways?

If you live in mountainous, hilly, or flood prone areas, pay attention to weather reports. If there are warnings of flooding, take an alternate route if it is available. Better yet, stay home.

If the roadway is flooded, even a little, don't attempt to drive through the water. Turn around and take an alternate route.

Temporary barriers blocking flooded roadways are placed by emergency personnel for a reason; never drive around them into a flooded area.

If you find yourself stalled in rising flood waters, do not attempt to stay with the car. A floating car can be swept into deeper water and can easily roll over. Escape if possible and get to higher ground immediately. Many flood related fatalities occur when people try to stay with the vehicle.

If the rushing water is too deep and the current is too strong, you will have to make a judgment call about staying with the vehicle. Turn around before you get into that position.

Be especially cautious when driving at night when it is much more difficult to recognize flooding conditions.

Remember that emergency personnel will be overwhelmed and may not be able to get to you for some time.

Labels: driving, flooding, hazardous

View Full Post posted by NSC - Traffic Safety : 3:14 PM

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An automobile's cruise control is a valuable piece of technology. Along with saving gas, the benefit of cruise control is its ability to prevent a driver from exceeding the speed limit. A driver who sets the cruise control at the posted speed limit can pass police officers and cruise through radar sites without having to worry about whether or not they are speeding. Cruise control can save drivers a lot of money in gas and speeding tickets but cruise control can have a down side too. Someone who relies on cruise control too much may find themselves on "auto-pilot" and neglect to pay full attention to their driving. A driver still needs to devote full attention to the road and have a "seat-of-the-pants" feel for their vehicle. This is especially true when driving in the rain.

Rain presents two distinct dangers to a driver; both with essentially the same end result. After a dry spell of any period, accumulated oil, grease, and dirt on the road can create extremely slippery conditions. The roads are most dangerous just after it starts to rain when a light sheen of water is standing on the road. The oil, grease etc. rise up in a layer on top of the water creating conditions similar to ice on the road. It creates such a problem during the summer thunderstorm period in the southeast that it is referred to as "Florida ice." After a period of heavy rain, the oil and grease will wash off the road and the slippery conditions diminish.

Heavy rain however creates a separate and equally dangerous situation. When water stands on the road, it can become deep enough that the tires can’t squeeze the water through the tread fast enough. When this happens, the tires can actually rise up on top of the water and ride across the water like water skis creating a condition known as "hydroplaning." Hydroplaning can start at speeds as low as 35 mph and becomes especially dangerous at speeds above 55 mph. The higher the speed, the greater the chance of hydroplaning.

In either situation, the first step a driver should take to counteract skidding is to take his/her foot off the gas pedal in order to slow the car's speed. Unless you have anti-lock brakes, you shouldn't apply the brakes until you have the car under control and the speed is reduced. Applying the brakes in a car without anti-lock brakes only adds to the problem. Grasp the steering wheel in both hands, steer toward the direction of the skid and then steer to keep your car centered in your lane.

This is where cruise control presents a problem. Cruise control will want to keep your vehicle going at a constant speed and speed only adds to the problem. Cruise control is disabled when you step on the brakes but that is exactly what you don’t want to do in a skidding situation unless your car is equipped with anti-lock brakes. The safest thing to do when it starts to rain is to disengage the cruise control and lower your speed. Driving in the rain really requires heightened awareness and that seat-of-the-pants feel for the car. Save your cruise control for fair weather.

Labels: cruise control, driving, hazardous