Text in force at 25-153: from 25-0, effective 1 Feb 1965.
No position light intensity may exceed the applicable values in the following table, except as provided in Sec. 25.1389 (b)(3). Overlaps Maximum intensity Area A (candles) Area B (candles) Green in dihedral angle L -------------------------------- 10 1 Red in dihedral angle R ---------------------------------- 10 1 Green in dihedral angle A ------------------------------- 5 1 Red in dihedral angle A ---------------------------------- 5 1 Rear white in dihedral angle L ------------------------- 5 1 Rear white in dihedral angle R ------------------------- 5 1 Where--
(a) Area A includes all directions in the adjacent dihedral angle that pass through the light source and intersect the common boundary plane at more than 10 degrees but less than 20 degrees; and
(b) Area B includes all directions in the adjacent dihedral angle that pass through the light source and intersect the common boundary plane at more than 20 degrees.
29 FR 18291 · Source