These bike racks look very much like squares, which have two sets of parallel lines. In the photograph I aligned them to create geometric perspective. It looks like the squares get smaller and smaller and smaller until they potentially reach the vanishing point. But in reality they are all exactly the same size and shape. There will never be a point where the bars would overlap, as they are equally spaced out. But in the photo it may appear as though they are becoming nearer and nearer until they meet. (There is an obvious exception in the third rack: it is crooked, likely the result of a bad parking job.)
