speaking as an angelino, using a cellphone in los angeles is arbitrarily legal depending on class and social status. Are you a police officer? Do you have diplomatic plates? were you Justin Bieber? then rev up those angry birds on the 101 and get ready to snapchat your next novel.
if you're one of the unwashed masses then be prepared for an almost entirely random enforcement experience. is today a warning day? or is it our legendary MANDATORY ENFORCEMENT ZONE policy where you'll be fined no matter what. Did you use your cellphone at a red light in a school zone? double fine. Was there construction? double fine. Did you just rear-end someone while on a cellphone? that piece of technology will never be considered in the accident report and is as good as having never happened.
dont get me wrong. im not here to defend cell usage in a moving vehicle but there is nothing about LA that precludes you from setting your 4-ways, pulling over, checking the phone, and safely entering traffic again. Or hell, plan the route before you get in the car. The trouble i find is the LAPD is like a magic 8-ball when it comes to enforcing this law. if you can make it to court, if you have the money and the time, then 60% of the time you'll get out of it every time.