Route 15 is from:
(a) Route 5 in San Diego to Route 8.
(b) Route 8 to the Nevada state line near Stateline, Nevada via the vicinity of Temecula, Corona, Ontario, Victorville, and Barstow.
Cal. Sts. & High. Code § 315
The State Highway Routes
Amended by Stats. 1994, Ch. 1220, Sec. 33
Official source: California Legislative Information. Reproduced from public-domain California statutes; confirm against the official source for the current text. Not legal advice.