Friday, March 18, 2016

Why You Should Never Use Cruise Control in the Rain

Cruise control can be a useful and convenient way to travel when traveling long distance on a highway that is free of traffic. However, this is not a feature you should use if driving in the rain. If you’re using cruise control and heavy rain starts pouring down, be sure to disable cruise control. If you end up hydroplaning, your cruise control can make it a lot more dangerous. Hydroplaning occurs when a layer of water builds between the wheels of a vehicle and the road surface, leading to a loss of traction that prevents the vehicle from responding to control inputs. This is why wet roads make driving conditions dangerous – because the rainwater causes the oil and grease on the road to rise up to the top of the water, creating a slippery, ice-like condition on the road. Hydroplaning can even happen at speeds as low as 35 MPH.

If this occurs while cruise control is turned on, it can be made worse because the cruise control will continue to try to keep your vehicle going at a constant speed. You can disable it by applying your brakes, but if you do not have anti-lock brakes, hitting your brakes while hydroplaning will only make the skidding worse.

If you’re driving on wet roads, disable your cruise control and lower your speed. If you do start to skid or hydroplane, take your foot off the gas, grasp the steering wheel with both hands, and steer toward the direction of the skid. Once you have some control you can correct your car and get centered back in your lane.

Although most modern vehicles have traction control systems in place to avoid these issues while driving on wet roads, there are still older vehicles that do not have these types of systems. Either way, cruise control systems vary per vehicle. The main danger of cruise control is the initial speed and the “hitting the brake” reaction that most people perform when losing control of their vehicle, particularly for vehicles without anti-lock brake systems. It should be noted, however, that if using cruise control on wet roads, your vehicle wouldn’t go faster because there is no traction; it will only try to maintain speed. But it is still recommended you should turn off cruise control and reduce your speed when it is raining or the roads are wet.


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