An investigation by the Health and Safety Executive (HSE) found there were no designated crossing points on the road, and nothing to segregate pedestrians and vehicles or guide on who had the right of way.
From Bristol, a state-designated music trail known as the Crooked Road zigzags through the wooded hillsides and meadows of South Virginia, past white picket fences and trout-filled creeks along the North Carolina border.
On the ground, airlines can differentiate themselves by plying road warriors with special check-in areas, clubs reserved for top-tier fliers and agents designated to wait on the most frequent fliers.