Caller ID: No, this does not exist as far as I know.
Traffic: No, but I can explain why this one doesn't exist. Roads, sidewalks, and paths are single-threaded in each direction as per the game's design. Ever notice that two sims out on the world lot cannot walk in the same direction side by side or drive (ride a bike, witch's broom, hoverboard, etc.) alongside of another one? This is why. If sims had to recognize and slow down or stop for other vehicles, then the faster moving ones would never be able to go any faster than the vehicle in front of them, or sim walking in front of them in case yours was jogging or running, and they might have to stop behind cars waiting at the side of the road for their passengers to get in/out. That would clog up world lot routing and slow the game engine down measurably. Working and observed traffic lights would present similar performance issues. It's probably just as well that things are as simplistic as they are in this regard. I'm sure we don't want to see down into the imagined subway system either, I bet it's a real mess down there especially during rush hour. ;)
Sims Reset: If you are using NRaas ErrorTrap, it may give you a script log at the time of the reset that can provide clues as to what happened. Such a log would have to be uploaded to us at NRaas though and a support thread opened, we can't really provide this service here. If your sims continue to act oddly, I would suggest MasterController Resets on both of them, the testingcheatsenabled kind don't really do much.