At these complex intersections, please set four traffic signals nodes at the stop positions, with traffic_signals:direction=forward/backward tags, instead of two traffic signals nodes at the middle like you did. See the discussion at the wiki:

https://wiki.openstreetmap.org/wiki/Tag:highway%3Dtraffic_signals#Complex_intersections

Over the last couple of years, most traffic signals in Southern California have been moved to the new way of tagging, which lets routing engines know that traffic is indeed moving through only a single traffic signal here.