Подставить названия к текстам 1.san francisco is one of america's safest large cities, but visitors should still use common sense to keep themselves andtheir belongings safe. be aware of your surroundings and always use licensed businesses for any services you needthis means don't get into unmarked cabs at the airport and don't rent bikes from companies that seem suspicious.if you're not sure, listings at sftourismgo.com are a good place to start,2.san francisco's mass transit network operates around the clock, 365 days a year, and is comprised of buses, trams,and commuter trains. visitors and locals should observe the safety information posted in the stations and in the buses/trainsthemselves as well as pay attention to any announcements broadcast over the public address system. some other tipsinclude: the gap between the train entrances and the platform edge is larger in some stations than in others, so do mind thegap; only buy metro cards from approved kiosks; and stand behind the yellow lines when waiting for trains or in buses,there are more than 9,000 licensed cabs that make up the city's fleet, which is administered by the city of san fransiscotransport and limousine commission and operates 24/7. all cabs accept both cash and credit cards. a few points tokeep in mind: if the light on its roof (which shows the cab's number) is illuminated, the taxi is available. also, alwaysexit via the curbside door and watch for cyclists.