Interesting SF experience

I was letting dogs out one moment and the next I noticed everyone was blowing the stop sign by my apartment. Upon closer inspection, there was a sport motorcycle in the intersection waving all the cars through the stop sign. I looked to see if it was a cop motorcycle, thinking it was a funeral. But no, it was just a regular sport bike. However, the guy was wearing a neon vest that said funeral. So do you hire guys on motorcycles to do this? I thought it was a cop thing to escort a funeral procession. I guess it was just a big city thing!