Practice question

What is 'mesopic vision' and why is it relevant to roadway lighting design?

  1. Vision that occurs only in bright daylight
  2. The transitional vision state between photopic (daylight) and scotopic (dark-adapted) that characterizes typical roadway driving conditions at night, where both rods and cones are active
  3. Vision through binoculars
  4. Vision impairment caused by aging

Answer: B — The transitional vision state between photopic (daylight) and scotopic (dark-adapted) that characterizes typical roadway driving conditions at night, where both rods and cones are active

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 →