§29.1391 Minimum intensities in the horizontal plane of forward and rear position lights

Each position light intensity must equal or exceed the applicable values in the following table: Dihedral angle Angle from right or left of longitudinal axis, measured Intensity (light included) from dead ahead L and R 0° to 10° (forward red and green) 10° to 20° 20° to 110° A (rear white) 110° to 180° (candelas)