What Are Mile Markers (MM)?
• Mile Markers (abbreviated MM) are the small green signs with white numbers that are located off the shoulder of major highways. Mile Markers are used to help DOT and the public have a reference point along the route. They are located every mile and indicate the number of miles from the beginning of the route in North Carolina to that particular point. On North-South routes, zero begins at the furthest point south and increases as you travel to the north. For example on I-95, Mile Marker 0 is located at the NC/SC border and Mile Marker 182 is located at the VA/NC border. On East-West routes the milemarkers begin at zero beginning in the west and increase as you travel east. As an example, on I-40, Mile Marker 0 is located at the NC/TN border, and Mile Marker 420 is located in Wilmington, NC. Milemarkers also correspond to Exit Numbers along all interstate routes in NC. Mile Marker 296 near Gorman St. in Raleigh, NC • What types of “events causing severe and unusual congestion” are sho
