What should the reflective rail face height range between in MUTCD specifications?

The correct answer highlights that the reflective rail face height should range from 8 to 12 inches according to the Manual on Uniform Traffic Control Devices (MUTCD) specifications. Reflective rail face height is critical for ensuring visibility, especially in low-light conditions, as it helps to guide drivers' attention to the structure of the road and enhances safety. Proper placement of reflective materials can significantly reduce accidents by providing clear visual cues to approaching vehicles. The specified height range of 8 to 12 inches strikes a balance that is high enough to be visible but low enough to be relevant to all drivers, ensuring that traffic control devices effectively achieve their purpose of maintaining safe driving conditions.