Currently, the U. S. Highway Transportation Division is liable for any car accident that occurs because of a highway in need of physical upkeep or repairs. However, the U. S. highway system is so vast that it is impossible to hire a large enough road crew to locate and eliminate every potential danger in its highways. It is proposed that the Transportation Division should be liable for accidents on the highway only if they knew about the hazard beforehand and carelessly failed to manage it. Which one of the following describes any accidents for which the U. S. Highway Transportation Department is now liable, but should not be according to the proposed change cited above? ['A person merging onto the highway is in an accident when he hits a car that was in his blind spot.', 'A truck skids into the ditch after hitting a patch of black ice on a snowy winter day.', 'An SUV is in a rollover accident on an extremely rutted stretch of highway, and the Transportation Department had been repeatedly informed of the need to repair this stretch for several years.', 'A person who was not paying attention to road signs runs into the ditch when the highway curves sharply.']