Practice question

What is High Friction Surface Treatment (HFST) used for on California highways and mountain curves?

  1. To make pavement surfaces perfectly smooth for reduced tire noise levels.
  2. To provide decorative colored surfacing for pedestrian crosswalks.
  3. To create a temporary removable surface for parade routes.
  4. To dramatically increase skid resistance and reduce wet-weather crashes.

Answer: D — To dramatically increase skid resistance and reduce wet-weather crashes.

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