What type of light is mounted on barricades and used for low intensity alerts?

The correct answer is Type A, which refers to low-intensity warning lights that are specifically designed for use on barricades. These lights are generally utilized in situations where there is a need to alert drivers to roadside hazards or work zones in low visibility conditions, such as at night or in poor weather. They typically operate with a steady or flashing light and are effective at attracting attention without being overwhelmingly bright, ensuring they serve their purpose without causing distractions to drivers.

Type B and Type C lights are designed for greater intensity, which is appropriate for more serious situations or higher speed roadways. Type D lights also fall under a different category aimed at specific operational needs. Understanding each type's intended use is essential for ensuring safety and compliance in work zones.