Furnish a PV as required. The PV shall consist of a work vehicle with approved flashing lights as required by the standard TCP’s and either: (a) A truck-mounted attenuator (TMA) with support structure designed for mounting the system to the work vehicle, or (b) A trailer truck-mounted attenuator (TTMA) designed for attaching the system to the work vehicle by a pintle hook. Provide an arrow panel (arrow mode for multilane roadways and caution mode on two-lane, twoway roadways) in accordance with 104.07.03. The arrow panel shall be integral to either the work vehicle or the TMA/TTMA. The size of the work vehicle and the method of attachment shall be as specified in the TMA/TTMA manufacturer's specifications, and as tested per NCHRP Report 350 at Test Level 3. No part of the TMA/TTMA shall be designed to intrude under the support vehicle during impact or require a safety clearance under the support vehicle that extends forward of the rear axle. General. The ballast of the work vehicle shall meet the manufacturer’s specification for the TMA/TTMA and be firmly secured to prevent movement during an impact. All exposed steel on the attenuator shall be primed and painted yellow. The undercarriage and support frame may be primed and painted black. All welding shall be performed by or under the direct supervision of a certified welder...
