I think you've had the right answers already. I'll just add a couple of personal experiences.
Two times my wife and I called for assistance when were riding on the SGRT somewhere between Del Amo and Seal Beach. One time we called animal control. One time we called the police. Both times the dispatchers had absolutely no idea where we were. Trying to help, we gave them detailed directions.
The animal control officer who was sent to help could not find us and eventually called our cell phone to get turn-by-turn directions. We ended up riding to Westminster Blvd and flashing our headlights at him as he drove by. The police officer did better, but as I mentioned, we had to give the dispatcher detailed directions.
In other words, don't count on quick and efficient help from public agencies when riding on the SGRT.
Last edited by mwandaw; 02-06-15 at 03:13 PM.