When you need to park your car or truck on an incline, you need to be extra careful to make sure that it doesn't roll away. One way to do this is to use wheel chocks. These are specially designed blocks that fit snugly against your wheels, preventing them from moving. Most wheel chocks are made of durable plastic, and they have a built-in brake that helps to keep your vehicle in place. In addition, many wheel chocks come with spikes on the bottom, which help to keep them firmly anchored in place. Whether you're parking on a hill or just want to be extra cautious, wheel chocks can help to prevent your vehicle from rolling away.