The streets and parts of streets of the City designated by law
as through streets are hereby declared to be through streets. The
driver of a vehicle shall stop at the entrance to a through street
and shall yield the right-of-way to other vehicles which have entered
the intersection or which are approaching so close on a through street
as to constitute an immediate hazard unless directed otherwise by
a traffic officer or a traffic-control signal. (See Schedule A.)
It shall be unlawful to operate any vehicle on any streets or
alleys designated as one-way streets or alleys by law, in any direction
other than that so designated.
Appropriate signs shall be posted to show all through, stop
and yield right-of-way streets, all one-way streets and alleys and
all intersections.