How many identification lamps are required on vehicles over 80 inches in overall width?

For vehicles that are over 80 inches in overall width, it is required to have three amber identification lamps. These lamps are essential for providing visibility and indicating the overall width of the vehicle to other drivers on the road. They must be mounted at the front and rear of the vehicle to effectively enhance safety, especially in wider vehicles where there may be increased challenges in determining size and distance by others.

The use of amber lamps is specifically stipulated by safety regulations to ensure uniformity and visibility, making them a standard for larger vehicles. The requirement for three lamps ensures that they are spaced adequately, offering optimal visibility from various angles. This is particularly important in enhancing safety during both daytime and nighttime driving conditions.

The other options do not meet the stipulations regarding visibility requirements for wider vehicles. For instance, red lamps are typically used at the rear of vehicles to indicate brake lights or warnings, while white lamps are often used for general lighting purposes rather than identification. Consequently, the choice of three amber identification lamps is not only a legal requirement but also a critical aspect of road safety for wider vehicles.