The CASS® TL-3 cable barrier system assists in redirecting errant vehicles that would otherwise traverse the median of a roadway. The post employs a unique wave-shaped slot, which works in tandem with a strategically positioned, widened cable spread designed to help restrain various types of vehicles that impact the system within NCHRP Report 350 crash test standards.


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  • Three-cable, high-tension system.
  • Pre-stretched (recommended) or standard cable options.
  • Wave-shaped slot designed to help lower deflections.
  • Aesthetically pleasing design.
  • Cables aligned within body of the post.


The slot and post are designed to help lower deflections as shown in crash tests by minimizing the length of unsupported cables. CASS® TL-3 is tested to NCHRP Report 350 Test Level 3.


Assembly & Maintenance

  • Pre-stretched and tensioned cables require once yearly maintenance.*
  • Cables provided in convenient preassembled 1,000′ lengths (305 meters).
  • Does not use interwoven cables.



*After an impact, the product must be inspected and evaluated per the direction of the specifying roadway authority. The ultimate decision on reparability rests with the specifying roadway authority and/or state DOT.



  • Pre-stretched (recommended) or Standard Cables: 3/4″ (19 mm)
  • Steel Yielding Cable Post (SYCP™):
    • S3 X 5.7 lb. I-Beam
    • S4 x 7.7 lb. (S100 x 11.5) I-Beam
  • Cable Heights: 20.9″ (530 mm), 25.2″ (640 mm), 29.5″ (750 mm)
  • Post Spacing: 6’ 6″ (2 m) to 20′ (6.1 m)

Product Images

Product Documents

PI Sheet



CASS® S4 29″ High Product Description Assembly Manual