The crossword solutions for the term CERTAIN DASH LENGTHS are EMS, which stands for Emergency Medical Services. EMS is a system of emergency medical care that provides pre-hospital treatment and transport to those in need of medical attention. EMS personnel are trained to respond quickly to medical emergencies and provide life-saving treatments such as CPR and first aid. EMS personnel also provide certain dash lengths, which are the distances between two points on a map or chart. These distances are used to measure the time it takes to travel from one point to another.