27.1391—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 (light included) | Angle from right or left of longitudinal axis, measured from dead ahead | Intensity (candles) |
|---|---|---|
| L and R (forward red and green) | 10° to 10°10° to 20° 20° to 110° | 4030 5 |
| A (rear white) | 110° to 180° | 20 |