Right and left as it applies to the vehicle's normal or predominant direction of travel. That goes for all vehicles, all of the time. It also applies to beasts of burden, homo sapiens sapiens, turtles, birds, etc., etc.
Sorry- a sore spot of mine: people confuse which side of the car is which and that should simply not be possible. No matter which side a car is driven from (right hand drive as is used in England, left hand drive as is used in the US), the left is always the left.
OFFTOPIC: the only one that is the least bit confusing that I know of is a backhoe because it has two normal modes of operation, one is being driven and the other is using the hoe to dig. So, all parts associated with the tractor are 'handed' via traveling with the front wheels forward, all parts of the backhoe and its operation are 'handed' via the digging position, which is opposite. So moving the boom on a backhoe to the right will move it behind the left wheels :-)
Brian
Is that the right side as you are sitting on the bike?