Keeping the Shared Driveway Clear

Your neighbour Keira lives in Dunvale, a mid-sized city in Manitoba. Her house shares a driveway with the property next door. Her housemate, Owen, regularly parks across their half of the driveway instead of pulling into his parking space, leaving Keira unable to drive out. She has had to ask him to move his car several times, including early in the morning. Keira wants dependable access but feels uncomfortable bringing up the same problem again. She asks you how to resolve it.