What is prohibited when operating a motor vehicle on a highway?

Operating a motor vehicle on a highway involves adhering to safety regulations to ensure the wellbeing of all drivers and pedestrians. The presence of flanges or lugs on the wheels is prohibited because these components can compromise the vehicle's handling and safety. They can create an uneven surface or increased friction, which may lead to handling issues or tire blowouts. This can significantly impact the vehicle's ability to brake and maneuver effectively, creating hazards not only for the driver but also for others on the road.

In contrast, spare tires, emergency lights, and windshield wipers are essential components for safe vehicle operation. Spare tires are crucial for addressing unforeseen flat tire situations, emergency lights are important for signaling and increasing visibility during breakdowns, and windshield wipers ensure clear visibility during inclement weather conditions. Therefore, safety regulations prioritize the design and condition of vehicle components, making the prohibition of flanges or lugs a clear measure to enhance road safety.