The TC-10T detour designation tab, TC-10 marker, and TC-10 A, B, C, D, E, & F markers must be used to indicate an alternate route for traffic to follow where construction activities require total or partial closure of roads or streets, and signed detour routes are required to handle traffic. Oversized (TC-110, TC-110A, B, C, D, E, F & TC-110T) must be used on freeways