Flagger is a widely used term for an individual who is responsible for controlling the flow of traffic, usually in construction sites or other locations where traffic needs to be diverted. However, there are multiple synonyms that can be used interchangeably with the term flagger. Some of the most common synonyms include traffic controller, traffic director, traffic guide, and traffic marshal. Other less common synonyms include traffic navigator, traffic regulator, traffic supervisor, and traffic coordinator. Regardless of the term used, the role of the individual remains the same, which is to ensure the safety of all individuals present by controlling the flow of traffic and preventing accidents.