SAFENCE High-Tension Cable Barrier from Gregory is a NCHRP 350 TL-3 and TL-4 approved tensioned wire rope cable barrier system. SAFENCE provides controlled impact protection when used as a center roadway barrier, side barrier or slope barrier. SAFENCE (HTCB) contains errant vehicles through the help of lateral forces, which gradually redirect the vehicle. Available in 4:1, 6:1 or flatter slope. All components are made in the U.S.