OAR 250-011-0080: Lights and Shapes; Application

(1) The rules in this section shall be complied with in all weathers. (2) Light requirements apply from sunset to sunrise, during which time, no other lights shall be exhibited, except for such lights which cannot be mistaken for the lights described in this division, do not impair their visibility, distinctive character, or interfere with the keeping of a proper look-out. (3) The prescribed lights, shall, if carried, also be exhibited from sunrise to sunset in restricted visibility and may be exhibited in all other circumstances when it is deemed necessary. (4) The rules concerning shapes shall be complied with by day. (5) A vessel’s navigation lights and shapes may be lowered if necessary to pass under a bridge.