Specifications include, but are not limited to: Category 1 Devices These devices include cones, tubular markers, flexible delineator posts, and drums, none of which have any accessories or attachments, and are used for channelization and delineation. Category 2 Devices These devices include Type I, II, and III barricades, portable sign supports with signs, intrusion alarms, drums, vertical panels, and cones, any of which having accessories or attachments. Category 3 Devices (a) Truck Mounted Attenuators (TMAs) and Trailer Truck Mounted Attenuators (TTMAs). (b) Temporary Barrier. (1) Concrete Barrier. (2) Traffic Barrier W Beam and Water Filled Barrier. (3) Steel/Aluminum Barrier. Category 4 Devices These devices include area lighting supports, arrow panels, and portable variable message signs that may be portable or trailer-mounted.