18.3.6.10 NMAC
Computation Of Distances
A. A motor carrier shall use the least expensive route when charging by mileage, consistent with existing events and road and weather conditions, unless the passenger or customer directs otherwise. B. A motor carrier other than a taxicab service shall compute actual distances, as applicable, using odometer readings, global positioning system (GPS) data, or the official road map of New Mexico issued by the department. C. Any remaining fraction of less than one-half mile will be omitted; any remaining fraction of one- half mile or greater will be increased to the next whole mile.