Reference markers are mile markers placed along the outside shoulder to mark the edge of the roadway. They convey information to drivers about

Correct answer

  • the posted speed limits on the road.
  • their locations on the roadway for navigation and emergency purposes.
  • upcoming expressways.

Explanation

Reference markers are located every two-tenths of a mile so motorists will always be in sight of one. They are placed along the outside shoulder to mark the edge of the roadway and convey information to drivers about their locations on the roadway for navigation and emergency purposes.

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