The SS90™ HD is a heavy duty, truck mounted attenuator (TMA) for use on stationary or moving shadow support vehicles. It is tested to NCHRP Report 350 Test Level 3. Additionally, it is further tested to the UK TD 49 (110 km/h) standard. The unit is comprised of two lightweight aluminum cartridges contained in a potentially reusable galvanized support frame.* The SS90™ HD is designed to help absorb rear-end impacts at speeds up to 62 mph (100 km/h) when impacted within NCHRP Report 350 crash test standards.
 
Features:
Galvanized, potentially reusable steel frame and cartridges.*
Black and yellow powder coated systems available upon request.
Replaceable, energy absorbing cartridges.
High temperature rated, powerful hydraulic system lowers and raises TMA for storage and transport.
Accessible hydraulic pump and reservoir helps facilitate inspection and maintenance.
Custom lighting systems available in 12V, 24V, Incandescent or LED systems.
“Push-to-activate” function raises and lowers unit.
Alert buzzer is designed to sound when the unit is not fully deployed or in vertical position. In-cab controls are also available.
Designed to help minimize damage from low-speed nuisance hits up to 6 mph (10 km/h).