<P> Fast Forwards were initially offered on every leg of the Race, excluding the final leg . To reduce costs of production involved with untaken Fast Forward tasks, the number of Fast Forwards available was reduced to two on each Race starting in season five, and then down to one as of season 14 (season 20 offered three Fast Forwards). Fast Forwards sometimes are not shown if no team opts to take the Fast Forward or if all remaining teams have used their Fast Forward . As a result, some later seasons have not featured any Fast Forward but it is unknown whether there was one offered or not . </P> <P> The Switchback is a concept introduced in which teams encounter a task from a previous season that was markedly difficult or memorable . The Switchback is associated with the same country or city as the original task, and often done at the same specific location . For example, Season 27 featured a Switchback from the first season, where teams had to re-perform the very first task in The Amazing Race history: free fall 200 feet (61 m) into the Batoka Gorge and swing above the Zambezi River . </P> <P> A switchback was also present in The Amazing Race Asia 4 . However what was considered a Roadblock in The Amazing Race Asia 1 is then considered a Detour and both team members have to complete it . </P> <P> Besides clues, teams may encounter the following that may or may not affect their placements or possibly slow them down: </P>

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