You enter a construction area with orange diamond signs, cones, an arrow panel, and a flagger. What is the best overall rule?

1. Treat the devices as a coordinated work-zone control system and obey the signs, channelizing devices, arrow panel, and flagger directions
2. Follow only the permanent lane markings and ignore temporary devices
3. Use the cones as a suggestion only if traffic is heavy
4. Assume the work zone ends at the first arrow panel