Ergonomic handling makes cordoning of work zones more productive. Fewer workers and trucks will maximize municipal budgets. Cordonators can be shipped separately, with or without reflective sheeting. They are easily put together or taken apart. A revolutionary ball and detent design snaps the unit in place with a simple twist of the handle. Flat surfaces and several reflective points make the Cordonator highly visible - day or night. Cordonators will integrate well with old style channelizers during changeover.