Cyclists are also significantly affected by crosswinds. Saving energy by avoiding riding in wind is a major part of the tactics of road bicycle racing, and this particularly applies in crosswinds. In crosswinds, groups of cyclists form 'echelons', rotating from the windward and leeward side. Riders who fail to form part of an echelon will have to work much harder, and can be dropped by the group that they are with. Crosswinds are common on races near the coast, and are often a feature of the Belgian classic one-day races, or flat stages of the Tour de France.