U-turns are allowed only at which location in business districts, cities, and towns?

U-turns are permitted at intersections in business districts, cities, and towns because intersections provide the necessary space and visibility for drivers to safely execute a U-turn. When conducted at intersections, drivers can utilize the existing traffic control signals and signs to assess the flow of traffic, ensuring that the maneuver can be completed without creating hazards for other vehicles and pedestrians.

In contrast, other locations like stop signs, traffic lights, and crosswalks may not offer the required safety or appropriateness for executing U-turns. For instance, a stop sign typically signals the need to stop and yield to other traffic, making it less suitable for making a U-turn. Traffic lights are meant to control the flow of traffic in one direction and may not provide a clear indication for a U-turn. As for crosswalks, they are designed primarily for pedestrian crossing, and performing a U-turn there could endanger pedestrians and violate traffic regulations. Thus, intersections are the designated and safest option for U-turns in these areas.