One way street

"On a road, vehicles may only stop or park on the right hand side in the direction of travel. On roads with one-way traffic, vehicles may also stop or park on the left hand side in other cases."

Driver license handbook

Sometimes there won't be a sign or you missed the sign at the entrance of the street. Thus its good to assess the situation around you with other key features. A key feature is the cars are all parked in the same direction on the same side of the road and there is one lane generally