[KaptKaos]

Or, is it legal to have a PA in your car?

Getting on the 105 Freeway in El Seguendo this morning and I hear what I think is a cop giving traffic directions over a PA. I look around, no cop. Traffic starts to merge again, here comes that voice again. Car in front of me, Honda Accord stops merging at the PA command, and pulls back onto Imperial into traffic. On coming car has to nail the brakes. I look behind me and there is a dark gray Nissan SUV. Guy driving is talking into something and I hear him over the PA. "You can't merge like that, go around." The guy didn't want people to merge in front of him and was using a PA to yell at them.

Obviously, my first instinct was that there was a cop and I looked around for him. When I realized it was some guy in an SUV, I used my camera phone to take a picture of him. Once on the highway, he took off. I sped up, followed and took a picture of his license plate too.

I was kinda pissed at the time, and if the guy had caused an accident I would have certainly stayed to comment to the police about it.

My question is: Is this legal? Can a regular citizen have a PA system in their car and use it to issue traffic commands like a cop does? Should I pursue this and file a police report? Should I do anything at all?

TIA