Concrete Barrier Walls (like J-J Hooks) are more cost effective than alternative types of barrier. Other barrier types must be replaced whenever an impact occurs (even low-energy impacts), because they may not perform properly in subsequent impacts. Considerable time and cost must be spent maintaining other barrier types, endangering motorists and workers during each repair.

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Concrete Temporary Barriers (J-J Hooks):

  • Greatly improved safety for workers in construction work zones
  • Concrete highway barriers are the preferred temporary barrier
  • Provide a high level of containment
  • Relatively inexpensive compared to other barriers
  • Can be free-standing, bolted, or pinned
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Steel or Water Temporary Barriers:

  • Sometimes used on low speed short-term projects for ease of use and relocation.
  • Don't provide the level of protection as concrete barriers
  • Cost more for long term projects than concrete barriers
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Impact Deflection Barriers

  • Guard Rail is a good example of this type
  • Deflects a vehicle & keeps it moving in its original line of travel
  • Can cause the operator to further lose control of his vehicle upon impact
  • Vehicle may penetrate or be deflected over the barrier
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Impact Absorbing Barriers

  • Simple types range from post/cable, concrete barriers, to live plants
  • More elaborate barriers include the "California Type"
  • Uses a standard chain-link fence & two steel cables
  • Moderately effective, but requires immediate repair
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Impact Resistant Barriers

  • A common form of this barrier type are bollards.
  • Can greatly reduce or stop the forces of car or truck impact
  • Typically used to protect a fixed structure from vehicular damage
 
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