 This measurement is a calculation of the average traffic levels for a roadway segment on any average day of the year.In 2009, MDOT figured that between 580 and 1,800 vehicles a day used sections of M-48.In addition, the department has added the portion of M-48 between the northern M-129 junction and M-134 to the Lake Huron Circle Tour, a scenic drive that loops around the lake.