Which of the following is not a typical Comcast traffic control device?

Traffic control devices are essential tools used to manage and direct vehicle and pedestrian traffic in various scenarios, especially in work zones. Comcast typically employs several common devices for traffic control, including cones, signs, and high visibility garments, to ensure the safety of both workers and the public.

Cones are commonly used to outline work areas and to direct the flow of traffic around hazards. Signs provide essential information regarding road usage and safety precautions, ensuring that drivers are aware of any changes in their usual route or any potential hazards. High visibility garments are critical for the safety of personnel working in or near traffic, making them easily visible to drivers.

On the other hand, traffic lights are not typically part of Comcast's traffic control devices. Traffic lights are fixed installations used by municipalities for managing intersections and tend to be more permanent infrastructure under the jurisdiction of city or state traffic management systems. Thus, in the context of Comcast's operations, traffic lights would not be considered a standard traffic control device used during their activities.