How should a rider adjust their position while passing?

Maintaining a safe distance from the vehicle being passed is essential for several reasons. When a rider keeps an adequate distance, it allows for a buffer zone that can absorb the reaction to sudden changes in traffic or road conditions. This distance not only provides extra space for maneuverability but also enhances visibility, ensuring the rider can see the entire lane ahead and make informed decisions. Keeping a safe distance is crucial for avoiding collisions or other dangerous situations that could arise, particularly when navigating the blind spots of larger vehicles.

The other options do not promote safe riding practices during a passing maneuver. Crowding the vehicle being passed could lead to an increased risk of an accident if the vehicle changes lanes unexpectedly or if the rider misjudges the amount of space available. Shifting to the shoulder is typically not advisable unless there’s an emergency, as this could put the rider in a vulnerable position without proper road clearance. Staying in the right lane only may limit a rider's ability to safely pass slower vehicles and doesn't address the need for maintaining an appropriate distance during the maneuver.