Skudder bottom, often called skid mark, is a term used to characterize a blemish left behind by a car when it skids. Skudder bottoms are visible on roads in the midst of icy weather, like heavy rain or snow. The skid marks act as warnings for potential sliding or lack of traction and ought to be approached with caution. Vehicle operators are advised to reduce their speed and preserve a safe distance from skudder bottoms to avoid any potential collisions. Stay safe on the roads!