Practice question

Per NMDOT 2019 Section 606.2.1, which four guardrail types are specified for metal-barrier work?

  1. Single-face W-beam, double-faced W-beam, single-face thrie beam, and double-faced thrie beam
  2. Cable median only, box-beam only, G1 cable, and G2 weak-post
  3. Concrete Jersey only, F-shape only, constant-slope, and single-slope
  4. Timber post-and-rail, stone masonry, chain-link, and stock fence

Answer: A — Single-face W-beam, double-faced W-beam, single-face thrie beam, and double-faced thrie beam

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