What is the speed limit in residential areas in Illinois unless otherwise posted?

In residential areas in Illinois, the speed limit is typically set at 30 mph unless a different limit is posted. This standard speed limit is designed to ensure the safety of residents, particularly children playing, pedestrians, and cyclists who may be present in these neighborhoods. Establishing a consistent limit helps drivers navigate through residential areas with increased awareness and caution.

While other limits may exist in certain areas, the default 30 mph limit serves as a general guideline for compliance with traffic laws. Adhering to this limit reduces the potential for accidents and enhances overall community safety.