The 975L Scorpion™ Arrowbar features an all-alluminum housing, hermetically sealed lamp modules and waterproof connectors for extreme durability. The 975L Arrowbar is available in 48” and 60” Arrowbar to meet MUTCD requirements for a type D device. When mounted on a suitable backboard the 48” arrow meets the MUTCD requirement for a type A device and the 60” arrow bar meets the requirements for a type B device. The internal Controller allows for single wire activation of all arrow modes, warning modes and nighttime dimming without the need for a special external controller.