Several "P turns" [1,2] have been introduced in the most congested areas, in which you need to go straight through the intersection, then wait to do a U-turn at a designated place, then turn left into the road you wanted to turn right into (or vice versa if you're coming from the other direction).
And because we have trams (streetcars), many intersections with trams have long had "hook turns" [3], signed as "right turn from left only", in which to turn right you must first pull over to the left to clear the lanes in your direction, wait for the lights to turn green in the road you're entering, then turn right. (This is not exactly eliminating right turns but it's a much safer and less disruptive way of doing them).
It all works well when you understand it, but it confuses the hell out of visitors.
[1] https://www.youtube.com/watch?v=yIREzujqOUg