Highway, or Mojave Freeway. It is also known colloquially as "the 15" to residents of Southern California.

Route description

Route 15 is defined as follows in section 315 of the California Streets and Highways Code:

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.

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