Final answer:
When there are no reduced speed limit signs in a work zone, drivers should maintain a safe speed for the conditions and adhere to the default area speed limits. Extra caution should be used in work zones due to the presence of workers and equipment. Legal speed limits are enforced even in the absence of signage.
Step-by-step explanation:
If there are no reduced speed limit signs clearly posted within a work zone, it is important to consider the default speed limit of the area and exercise caution. While driving, particularly through work zones, you should maintain a safe speed suitable for the conditions, even if specific signs are not present.
Work zones can be dangerous for both workers and drivers, and it is critical to ensure safety by reducing speed. Moreover, in the absence of clear signage, remember that law enforcement may still enforce the de jure speed limit or the expected safe speed within the zone, which might be lower than the speed on a typical day due to the presence of workers and equipment.
In regard to scenarios such as driving through a traffic signal or in emergency situations like transporting a pregnant woman to the hospital, it is generally expected to adhere to the traffic laws unless extraordinary circumstances justify otherwise. However, each situation will depend on specific factors and potential legal exemptions or allowances.