For instance, a sailboat must alter course if a collision can't be avoided by the give-way vessel alone:
Rule 17(b):
> When, from any cause, the vessel required to keep her course and speed finds herself so close that collision cannot be avoided by the action of the give-way vessel alone, she shall take such action as will best aid to avoid collision.
Plus, if we're going to connect this to a pedestrian, if a sailboat suddenly cut in front of a container ship with zero concern for its limited maneuverability/ability to stop, the sailboat would also violate Rule 2 by neglecting precaution required by seamen and failing to consider the limitations of the vessels involved.
In the Coast Guard Auxiliary “Sailing and Seamanship” class that I attended, targeting would-be sailboat skippers, we were told the USS Ranger nuclear-powered aircraft carrier had the right-of-way.
You have a responsibility to be cautious in heavy equipment no matter what the signage on the road says, and that includes keeping a speed at which you can stop safely if a person suddenly steps onto the road in situations where people are around. If you are driving past a busy bar in downtown, a drunk person might step out and you have a responsibility to assume that might happen. If you have to go slower sometimes, tough.