If single lane road deadlock is a problem, the city's urban planners should (and probably will) install a left turn signal to solve it. A better solution than reckless driving is to report the deadlock to the city.
Many of the roads in the city of Pittsburgh are carved into the mountain, sometimes with shops or houses on either side between the road and cliff face. The terrain there is not a trivial thing to engineer around.
You clearly have never been to Pittsburgh. There is simply no room at some intersections for a left turn lane, and a left turn signal would needlessly block traffic going the other way even when nobody wants to turn left.
