To prevent a car driver from trying to share your lane, you should?

Maintaining a center lane position is a strategic choice for motorcyclists to enhance safety and prevent other drivers from attempting to share their lane. By positioning the motorcycle in the center of the lane, the rider establishes a clearer presence on the road and uses maximum lane space to stay visible. This positioning also creates a buffer zone, making it more difficult for vehicles to encroach into the motorcycle's space, which can reduce the risk of collisions.

Riding in the far left lane might create an illusion of open space for drivers and could encourage them to squeeze into a perceived available lane. On the other hand, speeding up to overtake vehicles could lead to reckless behavior and might not effectively communicate to car drivers the need for proper space. Using hand signals is primarily for indicating intentions to other road users rather than for lane positioning and safety. Thus, the center lane position proves to be the most effective strategy for reducing the likelihood of a car intruding into a motorcycle's lane.