Roa rash is a colloquial term used to refer to skin and bone injury caused by abrasion with road surfaces, usually as consequence of cycling and motorcycling accidents. The term may be applied to both a fresh injury and the scar tissue left by an old one. The term is sometimes used to refer to longboarding, skateboarding, and inline skating abrasion accidents, especially those caused at high speeds (such as those as a result of longboarding.)