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

In residential areas, the standard speed limit is set at 25 miles per hour unless otherwise posted. This limit is established to ensure the safety of pedestrians, children playing, and residents living in those neighborhoods. It is a general guideline that encourages drivers to be cautious and aware of their surroundings, especially where there might be increased foot traffic.

The reasoning behind this speed limit also relates to the close proximity of homes, parks, and schools, where lower speeds allow for better reaction time for drivers should situations arise unexpectedly, such as a child darting into the street. Local governments may adjust this limit in certain areas, which is why it’s essential to pay attention to posted signs. However, in the absence of any specified limit, 25 miles per hour is the default speed limit for residential zones in Illinois.