When a vertical arrangement of lenses is used, red shall be placed at the top, amber in the middle and green at the bottom. When it is necessary to place the lights horizontally, the order of the lights shall be red at the left, amber in the middle and green at the right.
N.J. Stat. Ann. § 39:4-109
Position of lenses
Current official text: New Jersey Legislature. Digitized from the New Jersey Legislature bulk statutes download. Reproduced from public-domain New Jersey statutes; confirm against the official source for the current text. Not legal advice.