Sentryline II TL- 3 and TL- 4 Wire Rope Safety Barrier System

Sentryline II TL-3 and TL-4 Wire Rope Safety Barrier System is an AS3845 and NCHRP350 compliant longitudinal barrier system.

Watch the installation video here

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Sentryline II TL3 and TL4WireRopeSafetyBarrierSystem
TL3andTL4WireRopeSafetyBarrierSystem Roadway
TL3andTL4WireRopeSafetyBarrierSystem Closeup


When installed correctly the system will allow an errant vehicle to be stopped, contained or redirected in a safe manner.

This barrier system in particular provides alternative foundation pile size options with easy installation and zero maintenance.
The Sentryline II TL- 3 and TL- 4 Wire Rope Safety Barrier System can also be easily repaired after impact.


  • Tested to NCHRP350 TL-3 and TL-4
  • AS3845: 2015 compliant and approved for use by Australian State Road Authorities
  • Exceptionally good vehicle control and behaviour
  • Can be used on either edge of the road or median application
  • Designed to be used with Sentryline Terminal End III NCHRP350 TL-3 anchor
  • Can be upgraded from TL-3 to TL-4 easily by the addition of another cable
  • Low cost patented technology available exclusively through ACP


  • All posts hot dip galvanised (powder coating in various colours optional)
  • Cable – 19mm 3 x 7 strand pre-stretched by 35%
  • TL-3 top cable 770mm from ground
  • TL-4 top cable 790mm from ground
  • Typically line post footing piles: 300mm diameter x 750mm (0.05m3)
  • Length of need from post 5
  • Posts 1 – 7 are spaced at 1.5m (LoN is measured 8m from ground anchor)
  • The post spacing may vary from 2 to 9m depending on the deflection requirement
  • Concrete: 25Mpa
  • Tensioned to 25kN at 20°C. (Tension may vary depending on air temperature at the time if installation, see chart in the installation guidelines*)

Standards and Approvals

  • Sentryline II Wire Rope Barrier Systems have been designed and tested to meet the evaluation criteria of NCHRP 350 Test Levels 3 and 4
  • AS3845:2015 compliant
  • Approved for use by Australian State Road Authorities.

Installation Guide