Here's a video of Market Street in San Francisco taken in 1906 just a few days before the devastating earthquake. The caption says filmed from a streetcar, but I think it was filmed from a cable car.
There are trolley cars crossing in front of the cable car as well as early automobiles, horse carriages, and people. They cut in front the cable car without warning and almost get clipped a few times. There doesn't seem to be any kind of hand signals, turn-signals, or traffic lights. Its everyone for himself!
http://www.flixxy.com/san-francisco-1905-historical-footage.htm
John
There are trolley cars crossing in front of the cable car as well as early automobiles, horse carriages, and people. They cut in front the cable car without warning and almost get clipped a few times. There doesn't seem to be any kind of hand signals, turn-signals, or traffic lights. Its everyone for himself!
http://www.flixxy.com/san-francisco-1905-historical-footage.htm
John