What is the typical default speed limit in residential zones?

The typical default speed limit in residential zones is 25 mph. This limit is established to enhance safety for residents, pedestrians, and especially children who may be playing or walking in these areas. The 25 mph limit is considered a reasonable speed that allows drivers enough time to react to unexpected obstacles, such as children darting into the street or parked cars obstructing visibility.

In contrast, lower limits such as 15 mph may be applied in certain highly populated or particularly hazardous areas, like school zones, but they are not the standard for most residential neighborhoods. Higher limits, such as 35 mph or 45 mph, are typically designated for more commercial or major roads not within residential zones, where traffic flow and road conditions allow for greater speeds. This makes 25 mph the most common standard speed limit in residential neighborhoods, balancing the need for efficient traffic flow with the safety needs of the community.