What minimum height is specified for fog lamp projection from the center of the lamp?

The correct answer indicates that fog lamps must be mounted with their center at a height of at least 4 inches from the ground. This specification is important for ensuring that the light produced by fog lamps is effective in low visibility conditions, as placing them too high could lead to glare for oncoming traffic or not illuminate the road properly. Fog lamps are designed to emit a wide, low-pattern beam that helps drivers see under or below fog, rain, or snow. By adhering to the specified minimum height, the effectiveness of these lamps can be maximized while maintaining safety standards on the road.

Understanding the specific requirements for fog lamp height is crucial for vehicle compliance with traffic regulations and ensures that drivers can improve visibility without compromising safety for others on the road.