San Ysidro
På bilden nedan ser ni världens mest traffikerade gränsövergång, San Ysidro, beläget mellan San Diego (US) och Tijuana (MX). Enbart från den mexikanska sidan passerar dagligen 47.000 bilar och 140.000 personer! Enligt Wikipedia:
San Ysidro is home to the world's busiest land border crossing, where U.S. Interstate 5 crosses into Mexico at Tijuana. In the 2005 U.S. fiscal year, more than 17 million vehicles and 50 million people entered the United States at the San Ysidro port of entry. The great majority of these are workers (both of Mexican and U.S. nationality) commuting from Tijuana to jobs in the greater San Diego area and throughout southern California.
> Wikipedia: San Ysidro, San Diego, California

