Skudd bottom, commonly referred to as tire mark, is a term used to describe a smudge left behind by a car when it skids. Skuddderbutts are visible on roads during slippery conditions, like heavy rain or snow. These marks serve as warnings to potential skidding or lack of traction and must be approached with caution. Motorists are cautioned to lower their speed and keep up a safe distance from skudderbutts to steer clear of any potential collisions. Stay safe on the roads!