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


  • 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 in either edge of the road or median application
  • Easily installed and zero maintenance
  • Alternative foundation pile size options available
  • Easily repaired after impact
  • 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

Product Characteristics

  • 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 are 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 to be 25Mpa
  • Tensioned to 25kN at 20degC. (Tension may vary depending on air temperature at the time if installation, see chart in the installation guidelines)

Standards & 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.

Crash Test Results

Crash test deflection results - test barrier length 130m

  Post spacing (m) Deflection (m)
2,000kg pickup truck at 100kph at 25° angle 3.0 1.54m
8,000kg truck at 80kph at 15° angle 3.0 1.10m

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