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.

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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

Merger of Australian Construction Products and Safe Direction

We are delighted to announce the merger of Safe Direction Pty Ltd and Australian Construction Products Pty Ltd (ACP).
On 1 May 2023 Jaybro, Australia’s leading supplier to the civil construction and infrastructure sector, and owner of ACP, purchased 100% of the share capital of Safe Direction. Under Jaybro’s ownership the two businesses will be merged to form Australia’s preeminent company manufacturing and supplying vehicle barrier systems.

A compelling motivation for the merger is the value created for our customers from combining the collective resources and knowledge of the two companies. Notably there will be significant broadening of the product range and enhancement to distribution reach and capacity. There will be transitionary steps as the two businesses assemble under the one entity, Safe Direction. Part of this transition includes the consolidation of the products and services offered by the merged business into a single web domain

We trust that this merger will provide increased value to you and we look forward to the opportunity to be of assistance.