The Old Dominion.

Here are some suggested route marker signs for Virginia. The present State Primary route markers are a kind of rounded shield in a black square, and the State Secondary is the boring circle sign.

Here's the present Primary route marker.

(Grey represents sky, which is typical throughout)

This one can be for limited-access free roads like Quebec's Autoroutes.

This one can be for toll roads.

This one can be for the Primary roads.

And this one can be for Secondaries.