C68-0001A.22 Truck Mounted Attenuator A2.xlsx

This is a specification document for RFP Department 591, No. 220000001069, issued by what appears to be a state transportation department, specifically for a Truck Mounted Attenuator with Replaceable Cartridge meeting NCHRP 350 TL3 standards. The attenuator is a truck-mounted impact absorption system designed to protect work zones and reduce secondary collision impacts. The specification requires contractors to provide one complete system weighing approximately 1,795 pounds, featuring a bi-folding articulating frame assembly, dual cartridge system, hydraulic raise/lower mechanism, LED lighting compliant with FMVSS 108 standards, and four hand crank jacks with swivel casters. The unit must be capable of quick attachment and detachment from vehicles with a 37,000-pound gross vehicle weight rating, include a black and yellow chevron warning pattern, synchronized strobe lights with specific flash patterns, and hydraulic locking with mechanical backup systems. All components must be new, in current production, and include standard features.

The specification establishes rigorous performance and safety requirements, mandating that the attenuator pass all tests under NCHRP 350 TL 3-50 through TL 3-54 standards when mounted on trucks weighing up to 9,000 kilograms with automatic transmissions in neutral and parking brakes engaged. All welding must be performed by certified welders with metalwork manufactured in America, and all exposed metal shall be primed and painted black unless galvanized. The hydraulic system, including pump and hoses, must be factory-assembled and mounted to the attenuator, capable of tilting the frame assembly to a 90-degree position with hydraulic locking and mechanical backup mechanisms. The design must minimize damage to the shadow truck, ensure energy-absorbing elements do not protrude forward of the underride during impact, and limit vehicle rebound to no more than 5 percent of incoming velocity. Contractors must explicitly respond with "YES" to each specification section or provide detailed explanations for any deviations and available alternatives.