Keywords: MUTCD S4-5 METRIC.svg What a metric School Speed Limit Ahead sign in the United States would look like I have been unable to find any diagram for such a design in either the current or older versions of the MUTCD therefore it can be assumed that such a sign is unauthorized The situation is complicated however by the fact that the MUTCD requires speed limit ahead signs to reflect the same speed that is ahead so if a metric school speed limit sign were used this design would be required by the MUTCD's own guidelines MUTCD_S4-5 svg MUTCD_S5-1_METRIC svg 50 2012-10-04 00 55 UTC MUTCD_S4-5 svg MUTCD_S5-1_METRIC svg Federal Highway Administration - MUTCD derivative work Fry1989 Diagrams of school road signs of the United States SVG USA road signs in metric units Diagrams of green fluorescent road signs Speed limit ahead road signs Diagrams of metric speed limit signs of the United States Road signs in the United States using the metric system Diagrams of 30 km/h speed limit road signs |