Wisconsin's preferred interstate sign assembly is a unisign with a neutered shield that is 4.5 feet high and 3 feet wide for 2 digit signs on a wooden post or on a light pole in urban settings. For 3 digit signs, they are 4.5 feet high by 4 feet wide on a unisign. What is your state's preferred interstate sign assembly? Provide pictures if possible
(https://farm9.staticflickr.com/8535/29478645006_418695d4ec_b_d.jpg)
(https://farm9.staticflickr.com/8251/28890700213_8fc573f3d5_b_d.jpg)