What is the penalty for sideline interference on the third offense?

The penalty for sideline interference on the third offense is 15 yards. This specific enforcement is designed to maintain order on the sidelines and ensure the safety of players, coaches, and officials. Each offense leading up to the third instance typically incurs progressively more significant consequences to encourage compliance with sideline regulations. The 15-yard penalty reflects the seriousness of the infraction, especially after repeated offenses, aiming to promote sportsmanship and proper conduct during the game. This structure helps to deter further violations by making the consequences increasingly severe, thereby fostering a safer and more organized environment during the game.