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The Sentry Longitudinal Energy Dissipater (SLED) is a narrow, water-filled non-redirective gating crash cushion that is a MASH Tested, Passed, and Eligible.
The SLED is designed to shield the end of all permanent and temporary portable barrier shapes including concrete, steel, and plastic. SLED's unique design incorporates four internal steel cables which help envelop the impacting vehicle, reducing the possibility of secondary accidents. The SLED End Treatment does not require foundation anchor bolts to be attached to the road or bridge deck. The complete crash cushion can be installed quickly, with as little as one pick-up truck and two workers on compacted dirt, gravel, decomposed granite, asphalt, or concrete.

Each SLED module is manufactured from a high visibility yellow polyethylene that is UV stabilized to minimize degradation. It is designed to deform and rupture on impact, absorbing the energy of the errant vehicle. SLED has the most versatile transition for shielding all permanent and temporary portable barriers. The combination of hinging and contouring, allows the transition panels of the SLED End Treatment to be attached to narrow, wide, or other profile shapes with either converging, or diverging angles, up to 10 degrees.