What vehicle equipment can extend beyond the body of the car?

The correct choice states that nothing should extend more than three inches beyond the left side or six inches beyond the right side of the vehicle. This regulation is important as it ensures the safety of the vehicle and others on the road.

When a vehicle has parts that extend beyond its body, such as side mirrors, those extensions can create hazards for other drivers, particularly in narrow lanes or when passing. The established limits (three inches on the left and six inches on the right) help maintain a reasonable profile of the vehicle to reduce the risk of accidents caused by protruding equipment.

This answer emphasizes the importance of vehicle design and safety regulations, which are aimed at preventing collisions and ensuring that vehicles can navigate various road conditions without creating dangerous situations. Other choices suggest different interpretations of vehicle extensions, but adhering to the specified limits helps maintain safety standards on roadways.