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Test Methods and Specifications

Cover of Supply and Installation of Timber Guide Posts
Supply and Installation of Timber Guide Posts
  • Publication no: ATS-4420-26
  • Published: 30 March 2026
  • Edition: 1.0

Austroads Technical Specification ATS 4420 sets out the requirements for the supply and installation of timber guide posts, including delineators.

ATS 4420 does not cover steel or plastic Guide Posts (refer to ATS 4410).

This Technical Specification is also available as a Word document.

  • 1. Scope
  • 2. Referenced Documents
  • 3. Definitions
  • 4. Quality System Requirements
  • 5. Supply of Guide Posts
    • Durability
    • Strength and Stress Grade
    • Preservative Treatment
    • Dimensions
    • Surface Treatment
    • Markings
  • 6. Delineators
  • 7. Installation
    • General
    • Installation
    • Installation Tolerances
    • Removal of Existing Guide Posts
  • Annexure A Summary of Hold Points, Witness Points and Records
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