Practice question

What type of inductive loop detector configuration is most commonly used for stop-line detection?

  1. A single small round loop
  2. A 6-foot by 6-foot square loop or quadrupole loop
  3. A long narrow loop spanning the full intersection
  4. A diagonal loop installed at 45 degrees

Answer: B — A 6-foot by 6-foot square loop or quadrupole loop

The correct answer is shown above. Try the full quiz for additional practice.

Practice more: IMSA Traffic Signal I Practice Questions - IMSA Traffic Signal Technician Level I Certification Exam Exam →