An Oskaloosa woman died on injuries she suffered when her vehicle hit a semi around 7 PM on Wednesday August 6th. Robin Ann Vos, 51, was pulling out of a private driveway at 1856 Highway 163, when she failed to yield to the semi, which was driven by Bradley Nelson, 27, of Allison. Ms. Vos was transported to Mahaska Health Partnership, where she was pronounced dead. She was not wearing a seat belt. Mr. Nelson was not seriously hurt. The accident remains under investigation.