I decided to err on the side of safety and drove again today due to lingering ice on some streets. Much of my commute route is on neighborhood streets with lots of shady spots and north-facing hills where the ice is slow to melt. It's amazing how slow sleet is to melt, particularly after cars have packed it down to solid ice. One block from my house, a short street on my route is still nearly covered with ice. Temperatures today will be above freezing all day, with a high in the 60s, so the roads should be totally clear by tomorrow. However, the forecast is already calling for heavy fog. Not sure how they know that so far ahead but it wouldn't surprise me.