driver-qualification-handbook-english

3Source (16)The narrowing view from the driver’s seatSitting in the driving seat of a stationary car, most drivers have about a 180 degreefield of vision. However, once you start moving, this field narrows. The faster youdrive, the narrower it gets. At 100 km/h it has narrowed to only 50 degrees – lessthan one third of what you could see when you were stationary!This narrowing of the visual field occurs because our eyes and brain can’t keep upwith the rapidly changing images in our peripheral vision (what we see out of thecorners of our eyes to the left and right). You can experience this as a passengerwhen you look straight out of the side window of a car or a train. Everything seemsto rush by quickly or to blur. You can’t easily focus on any object.76Driver qualification handbook