We have motorcycle only spots where I work. Unfortunately, they are way far away from the door I enter the building at in a different parking lot. Works out good for the manufacturing guys though. I just park on the crossed out spots in the engineering parking lot. Keeps the bike pretty visible to the cages. My facilities manager doesn't seem to mind that and the local constabulary doesn't ticket it either. (Our company lets the local cops ticket cars in our lots that are parked incorrectly or illegally.)
