What should you do if there are no reduced speed limit signs visibly posted in a work zone?

In a work zone where there are no reduced speed limit signs visibly posted, the appropriate action is to obey the normal posted speed limit. Work zones are designed to ensure the safety of both workers and drivers, and speed limits can be adjusted to reflect the conditions of the road. However, if no alternate speed limit is provided, the standard limit applies.

Driving at the normal speed helps maintain control of the vehicle and reduces the risk of accidents. It's important for drivers to stay vigilant and prepared for any potential hazards that may arise in work zones, such as workers, equipment, or sudden changes in the road conditions. By adhering to the normal speed limit, drivers contribute to a safer environment for everyone on the road.

The other choices suggest actions that either compromise safety or do not adhere to traffic regulations. Thus, following the posted speed limit in the absence of specific instructions for the work zone is the responsible decision.