What can be done to prevent car crashes?             As was shown earlier, icy roads are a hazard, but, luckily there are a number of ways to adjust and compensate for the development of ice on the roads. First, let's start with the simple and most obvious. As shown earlier, the radial acceleration is equal to v2/r, so the easiest way to keep from sliding around when taking a corner is to simply reduce your driving speed, or increase the radius of your turn. Both of these things will reduce the radial acceleration when going around a turn. Now, some of this can be applied to not just the car, but the engineers who design the roads. Initially, the easy way to keep the radial acceleration down is to START the road with a larger radius, that was people have an already reduced radial acceleration. Photo credit: http://www.yourskicoach.com/glossary/SkiGlossary/Radius.html         The next thing that people are doing is lowering the center of mass of the vehicles that are being used. For example, Formula 1 cars are extremely low to the ground, and they take corners fast. The same goes for cars that race NASCAR. Their cars are low to the ground so that when they go around a corner at 200 mph, they don't tip over. Now, the same can be said about any type of car, however this is hard for large trucks. Photo credit: http://tires.about.com/od/understanding_tires/a/Tire-Siping-What-The-Heck-Is-A-Sipe.htm         Another major thing that has been helping cars reduce the amount they slip is different types of tires. There are two main types that accomplish the same generally thing, just in two different ways. The first is a generic studded tire, which uses pointy metal spikes sticking out of the tire to grab onto the ice. The next is something that is slowly becoming more popular in the world of icy roads; Siped Tires. The idea behind these tires is that the treads on the tire are cut into hundreds of small jagged slits that serve basically as suctions to pull a thin layer of water up into the slits, providing a tight contact between the ground and the tire. Siped tires are more flexible than any other tires, which makes them good in slippery conditions such as icy roads. This is because the rubber can bend and form to grab onto the ice.