Abstract: A bracket is provided having a shaft with an upper end for mounting an optical warning device and a platform supporting a lower end of the shaft. The platform is fixed to a side of a truck bed so that the upper end of the shaft extends from the shaft to position the optical warning device at a height higher than the cab of the truck. The bracket freestands mounts the optical warning device since the optical warning device stands alone or on its own foundation provided by the attachment of platform to side of the truck bed, free of support or attachment to any other part of the truck. The platform may be attached by a support member mounted in a stake pocket present along the side of the bed of the truck, or by one or more clamp members to the side of the truck bed.