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


Sentryline II TL-3 and TL-4 Wire Rope Safety Barrier is an AS3845 and NCHRP350 compliant longitudinal barrier. 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: 1999 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 II 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 (where post 1 is the trigger post)
  • Posts 2 – 5 are spaced at 2m (LoN to the trigger post)
  • 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 Barriers have been designed and tested to meet the evaluation criteria of NCHRP 350 Test Levels 3 and 4.
  • AS3845:1999 compliant
  • Approved for use by Australian State Road Authorities.

Crash Test Results

Crash test deflection results - test barrier length 130m

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

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