When driving and you see a flagger ahead when should you obey their instructions?

You should obey a flagger's instructions immediately upon seeing them, as they are there to ensure safety and maintain an orderly flow of traffic in construction or roadwork zones. Flaggers use hand signals and flags to direct drivers, and failing to comply can lead to accidents or disruptions. Always be prepared to stop or change lanes as directed. Prioritizing the flagger's signals helps protect both workers and motorists.