Which of the following options is NOT a function of a Traffic control channelizing device?

A traffic control channelizing device is specifically designed to manage the flow of vehicles and pedestrians in a safe manner, especially around temporary or construction zones. These devices are instrumental in guiding traffic, alerting drivers to hazards, and ensuring safety for both workers and pedestrians.

The primary purpose of these devices is to channel or guide traffic rather than control traffic signals directly. Operating traffic signals involves electronic systems that manage traffic flow at intersections or specific points, which is a completely different function not associated with channelizing devices. These devices, such as cones, barricades, and barriers, focus on physical direction and visual indication rather than signal operation. Therefore, recognizing that "operating traffic signals" does not fall under the functions of channelizing devices helps clarify their specific role in traffic management.