What is the speed limit in a residential area in Texas unless otherwise posted?

Answer: B — 30 mph

In Texas, the default speed limit in residential areas is 30 mph unless otherwise posted. This regulation is designed to promote safety in neighborhoods where pedestrians, cyclists, and children are more likely to be present. The speed limit reflects the expectation that residential areas typically have increased foot traffic and lower visibility due to driveways, parked cars, and other obstructions. Maintaining a speed of 30 mph helps drivers react more effectively to sudden stops or obstacles, reducing the likelihood of accidents. Understanding this default speed limit is crucial for drivers to ensure safety and compliance with local laws. It also encourages a more gentle driving behavior conducive to community safety.