On the program card, jumpers are used to indicate compatibility for what two components?

The correct answer highlights that jumpers on the program card serve to establish compatibility between movements and channels within a traffic signal system. Movements refer to the specific traffic flows that can occur at an intersection, such as left turns or through traffic, while channels pertain to the logical pathways or operational modes that manage these movements.

Jumpers are critical in configuring the traffic signal controller to recognize which movements are active or required for a particular signal operation. By setting these jumpers, technicians can ensure that the right signals illuminate to accommodate the intended traffic patterns effectively. The interaction between movements and channels is essential for optimizing traffic flow and safety at intersections.

Understanding this relationship helps in troubleshooting and setting up traffic signal systems, ensuring that the components are running harmoniously to manage the flow of vehicles and pedestrians effectively.