A "Mile Marker" is a sign or post placed along a road or highway that indicates the distance traveled from a specific starting point, usually a city or a state line. These markers help drivers gauge their progress and can also assist in navigation and emergency situations by providing reference points for location. Mile markers are typically numbered sequentially, with each number representing a mile. They are commonly found on interstates and major highways, and they often include additional information, such as the name of the road or nearby exits. Interstate Highway System and road safety are related topics that highlight the importance of mile markers in travel.