Practice question

A radar detector for stop-bar detection differs from a loop in that it:

  1. Has no pavement saw-cut and detects through reflected RF, providing zone-based output to the cabinet
  2. Requires an inductance-based amplifier in the cabinet
  3. Cannot output calls to the controller
  4. Replaces the MMU

Answer: A — Has no pavement saw-cut and detects through reflected RF, providing zone-based output to the cabinet

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