Hello, trunk roads that are stubs and lack a connection to another motorway or trunk route at its terminus or those that are bypassed by highways that are better for long-distance traveling (such as I 40) are better fit with highway=primary and expressway=yes. The segment of OKC Boulevard between I 40 and Klein Avenue could be tagged as a motorway as it is a freeway spur, but the rest of the route is more of a business loop with some expressway sections and should not be tagged as trunk.