Perhaps I needed to be clearer when I wrote about curves on the paths. Almost none of the paths have significant straight aways. There are what seem to be decorative arcs and of course the islands around which we divert. So it not just the 90 degree curves for tunnels or street crossings. Additionally this week the landscape company which was applying straw to the beddings along the path was unable to complete the work in a single day. So bundles of straw were left intruding into the paths. Very difficult to see at night, but an interruption in the stripe would be visible.
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