In 'The Amazing Race', what color is the flag marking a clue box?

In 'The Amazing Race', clue boxes are marked with yellow-and-white flags. Teams look for these distinctive colors at locations around the world to find their next instruction.

The clue box system is central to the race's structure. A team usually removes an envelope containing directions for a task, detour, roadblock or route information before continuing.

The yellow-and-white design helps identify official race materials in busy public places. It also gives the show a consistent visual identity across countries and landscapes.

The flags should not be confused with the race's red-and-yellow route markers, which can appear in other production contexts. The clue itself determines what teams must do next, so finding a box does not necessarily mean the team has reached the end of a leg.