Practice question

When performing a lighting design calculation using the lumen method, which formula determines the average maintained illuminance on a roadway?

  1. Illuminance = Wattage / Area
  2. Illuminance = (Lumens × CU × LLF) / Area
  3. Illuminance = Voltage × Current
  4. Illuminance = Candelas / Distance²

Answer: B — Illuminance = (Lumens × CU × LLF) / Area

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

Practice more: IMSA Roadway Lighting II Practice Questions - IMSA Roadway Lighting Technician Level II Certification Exam Exam →