When lane direction control signals are placed over the individual lanes of a street or highway, vehicular traffic may travel in any lane over which a green signal is shown, but shall not enter or travel in any lane over which a red signal is shown.
Mo. Rev. Stat. § 300.170
Lane direction control signals
Effective: 28 Aug 1965; (L. 1965 p. 445 § 34)
Official source: Missouri Revisor of Statutes. Reproduced from public-domain Missouri statutes; confirm against the official source for the current text. Not legal advice.