(625 ILCS 5/1-154) (from Ch. 95 1/2, par. 1-154)
Sec. 1-154. Official traffic-control devices.
All signs, signals, markings, and devices which conform with the State Manual and not inconsistent with this Act placed or erected by authority of a public body or official having jurisdiction, for the purpose of regulating, warning, or guiding traffic.
(Source: P.A. 76-1586.)