I hate being cynical, but in LA this ruling means nothing. I can’t remember the last time I saw someone pulled over for a traffic offense.
Edit: This was in Riverside County (~60 miles from LA)
https://cellebrite.com/en/how-a-suspects-pattern-of-life-ana...
https://cellebrite.com/en/samsung-rubin-digital-forensics-va...
The father killed his family and had a pretty good shot at sowing reasonable doubt until they pulled his sons phone telemetry and it showed the son unlocking his phone and checking socials at a time that conflicted with the dads story.
Phones truly are a surveillance dream. You couldn’t ask for a more invasive tracking device, and people love it. You couldn’t pry a phone away from most people these days