Page 35 of the Rice Signs 2017 Traffic Safety Catalog continues the Guide Signs section with Route Markers and Route Marker Auxiliary Plates. Route Markers (M1 series) include the standard MUTCD route shields — Interstate route shields with the red, white, and blue federal interstate design; U.S. Highway shields with the black-on-white classic shape; State Highway shields (custom-generated by jurisdiction); and County Route markers. Truck Route and Business Route variants distinguish commercial and business-district routings. Route Marker Auxiliary Plates (M3, M4, M5, M6 series) are smaller mounted-above-or-below plates that add direction (North, South, East, West), context (Junction, Truck, To), and movement (turn arrows, directional arrows) information to a primary route shield assembly. The Custom State Route Shield Generator lets you specify your jurisdiction shape and number for state-specific route signage.