I do it all the time. As I live within the city all of my routes are dictated by safety and time of day, and I am always looking at the map trying to create right turning loops. (Days off I leave the city). My most recent right turn only loop is a predawn 20 mile/ 32 kilometer time trial type loop around my home on roads to be avoided later. (Dinotte tail light on its most alarming flash mode). I appreciate the lengthier green lights on these larger roads. I feel very hemmed in!