What is the intended use of auxiliary lamps?

The intended use of auxiliary lamps is to provide supplemental lighting when necessary. These lamps are designed to enhance visibility under specific conditions, such as during nighttime driving or in adverse weather situations where standard headlights may not offer sufficient illumination. Auxiliary lamps can illuminate areas that are not adequately covered by the vehicle's main lighting system, improving safety by allowing the driver to see more clearly and be seen by others.

In contrast, the other options do not accurately describe the primary purpose of auxiliary lamps. They are not intended for normal driving conditions, as that is the role of factory-installed headlights. Auxiliary lamps are not meant to serve as the primary light source, as their function is to supplement existing lighting rather than replace it. Additionally, auxiliary lamps do not provide information about vehicle height and weight; this information is typically communicated through other means, such as vehicle identifiers or markings.