In Phoenix I-10 intersects I-17 at 20th Street and leads west to Los Angeles. West of Phoenix, SR 85 intersects with I-10 and continues south to Gila Bend; I-8 can then be followed to Yuma and San Diego.
Getting Around
Street System
The streets in Phoenix form an orderly grid. Numbered streets run north and south, intersected by named streets going east and west. The axis is formed by Washington Street, which divides the city north and south, and Central Avenue, which determines the east and west sections. All avenues run west of Central; all streets, east.Unless otherwise posted the speed limit on most streets is 25 mph. A right turn on red after a complete stop is legal unless otherwise posted. During rush hours the center turn lanes of 7th Avenue and 7th Street are reverse traffic flow lanes: morning rush hour one way into the city and evening rush hour one way out of the city. Try to avoid rush hours, 7-9 a.m. and 4-6 p.m.