The TrafFix Lo-Ro SLED End Treatment is the ONLY specified End Treatment for the TrafFix Lo-Ro Water Cable Barriers. The Lo-Ro Barriers provides positive work zone protection on low speed roads (up to 70km). It is a MASH approved (TL-2) temporary crash barrier with dynamic deflection of only 3.6m. The Lo-Ro SLED is a water filled end treatment, used where the ends of Lo-Ro Barrier are exposed to vehicle travel.