Skudd bottom, also known as tire mark, is a term used to describe a blemish left behind by a automobile during skidding. Skudder bottoms are visible on roads while icy conditions, such as heavy rain or snow. They serve as signs of possible skidding or lack of traction and must be handled carefully. Drivers are cautioned to lower their speed and preserve a safe distance from skudder bottoms to avoid any potential accidents. Stay safe on the roads!