What action is advisable if you encounter a work zone with no posted speed limits?

Answer: B — Obey the default speed limit of the area

When encountering a work zone without posted speed limits, it is advisable to obey the default speed limit of the area. Default speed limits are established by law and are designed to ensure safe driving conditions based on the type of roadway and surrounding environment. Work zones can present unique hazards due to the presence of workers, machinery, and changes in traffic patterns. Adhering to the default speed limit helps maintain safety for both drivers and workers, ensuring that vehicles are traveling at a safe and reasonable speed, even in the absence of specific signage. This approach not only protects those in the work zone but also helps drivers avoid unexpected incidents that may arise in construction areas, such as sudden stops or obstacles. In contrast, other options might lead to unsafe situations. Driving at any speed could endanger both yourself and workers. Calling authorities may not be practical in the moment, and excessively slowing down could create backups and increase the risk of accidents. By following the established default speed limit where clear signage is lacking, drivers can contribute to safer road conditions in work zones.