What combination of lights provides maximum visibility during night operations?

The combination of red/amber warning lights on, with headlights, fog lights, and traffic directional boards turned off provides maximum visibility during night operations for several reasons.

Red and amber lights are specifically designed to grab attention and indicate warning. These colors are effective in various weather conditions and at night when visibility might be limited. Having the headlights off helps minimize glare and reduces visibility distraction for both the operators and other drivers on the road. Fog lights are also turned off, as they can create a blinding effect in certain conditions, further complicating visibility during nighttime operations.

Traffic directional boards on alert other road users about the presence of emergency operations ahead, guiding them safely through the area. This combination ensures that responders remain visible while maintaining a clear line of sight without overwhelming other drivers with excessive light.

In contrast, other combinations may lack the essential warnings or may create too much light that could detract from the situation, thereby reducing overall safety during night operations.