Introduced in The Amazing Race 5, the Yield is an obstacle that teams may use to hinder another team behind them. When a team arrives at the Yield board, they may choose another team to Yield. A team places the picture of the team they wish to yield onto the Yield sign (found near one of the Route Markers). When the target arrives at the Yield station, they must turn over an hourglass found on the Yield sign and wait for all the sand to drain before continuing. It is suggested that this generally takes around 30 minutes.
A team can only use the Yield once during the race (as represented by the single "Courtesy of" sticker they receive). However, a team can be Yielded any number of times. Additionally, a team is still free to use the U-Turn after using the Yield.
The Yielding team would have to place a small sticker with their own picture on the board as well, identifying themselves as the perpetrators. Each team gets an envelope with their 'courtesy of' sticker at the start of the race, and if a team's envelope goes missing, that team loses all power of using any future Yields. This has happened to Linda & Karen and Joseph & Monica, and possibly more teams. Some more modern international versions now use a touch-screen interface, eliminating the need for these stickers. However, the one-per-race limitation remains.
Each team is required to stop at the Yield station, and state aloud whether or not they were yielded by another team, and (if the Yield wasn't already played) whether or not they choose to yield any of the teams behind them. In the early use of the Yield, teams were required to remove a numbered marker as well when they performed this act, though beyond tracking their placement in the leg, it was there for a situation where two teams want to yield and arrive at the yield the same time, the team that got a higher number would yield first.
In Season 5, the sign was larger than in the subsequent series of the Yield. Teams weren't aware from the clues whether or not there was a Yield ahead. From Season 6 onwards, when there was going to be a Yield, the teams would find the message "Caution, Yield Ahead" in their clue. This is sometimes present in international versions, but sometimes not.
Teams are not aware of which teams are ahead of and behind them upon arrival at the Yield. As such, it is possible that a team may attempt to Yield someone that is ahead of them. In this case, the Yield will be ineffective. This has only ever happened once. (See below)
International versions have introduced the Anonymous Yield. In this case, the Yielding team will not have to use their "Courtesy of" sticker to identify themselves as having used the Yield, thus remaining anonymous. As such, they will still be able to use a regular Yield, should one appear later in the race (as they still have their sticker).
So far, this has only happened in The Amazing Race Philippines 1. Interestingly, this Yield was also found in the middle of a Roadblock, meaning the team member performing the task could use the Yield without their partner's knowledge (or even consent).
Some international versions have introduced a more unique version of the Yield, wherein each team must vote for a Yield target at the beginning of the leg. The team that receives the most votes will be Yielded at some point during the leg. This is sometimes known as a Must-Vote Yield. If the voting ends in a tie, both teams with the most votes are Yielded (and two separate hourglass are used).