Practice question

What does a motorcycle headlight modulator do, and is it legal in Massachusetts?

  1. It cycles the headlight between high and low beam to improve daytime conspicuity, and it is legal under federal regulation 49 CFR 571.108
  2. It flashes blue lights and is illegal for civilians
  3. It increases beam range to two miles and is illegal
  4. It is a feature that only works at night

Answer: A — It cycles the headlight between high and low beam to improve daytime conspicuity, and it is legal under federal regulation 49 CFR 571.108

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