Silicon valley has excellent road network with Interstate 101 and 280 Freeways running south end to north end. There are many exit and entry points to connect Freeways with local road network.
Interstate 280 (Junipero Serra Freeway and Sinclair Freeway) comprises both an alternate and commuter route from San Francisco to San Jose. Bypassing the more industrial and crowded U.S. 101, Interstate 280 is eight lanes throughout, following the San Andreas fault line along the San Francisco peninsula.
It was originally planned to connect it to Interstate 80 near the San Francisco-Oakland Bay Bridge. It used to extend as far as Third Street, but now terminates just south of the new AT&T Ballpark, where it transitions onto King Street and ultimately the Embarcadero. There are no current plans to construct the remainder of I-280 at this time, but it remains as a proposed route.
There are many websites which indicate traffic conditions on freeways(www.nbcbayarea.com/traffic
) which help travellers to choose less traffic route.
View of U.S. 101 north. A two-lane off-ramp (Exit 384) follows for Interstates 280 and 680 north. Photo taken 03/25/16.