Don’t assume that a motorcyclist in the left part of the lane is planning to turn left. Motorcyclists often ride in the left part of the lane to make themselves more visible because motorcycles can be hard to see, especially at night, at dusk or in heavy traffic. Also, when a motorcyclist is riding behind a large vehicle (such as a bus or large truck), he or she may ride in the left part of the lane to see beyond the large vehicle and view the road ahead.