Route 18 is from:
(a) Route 10 near San Bernardino to Route 210.
(b) Route 210 near San Bernardino to Route 15 in Victorville via Big Bear Lake.
(c) Route 15 near Victorville to Route 138 near Pearblossom.
Cal. Sts. & High. Code § 318
The State Highway Routes
Amended by Stats. 1999, Ch. 724, Sec. 18
Official source: California Legislative Information. Reproduced from public-domain California statutes; confirm against the official source for the current text. Not legal advice.