flow separation

The permanent sludge puddle where the broken van used to sit looked too contaminated to freeze, but the upper layers and edges appear to have given it a try. I went for a slightly skittering and short-stepped run round all the bike paths in the morning, first observing an Amazon van almost losing it going round the corner just up from us then locking its wheels a couple of times down the hill, so changed into Vibram when I got back to shoogle a bucketworth of salt from each of the three closest gritbins round the nearby slippy/sloping footways and roads.