There's also an unending roll of paper that gets every destination and address written on it. They get crossed off after a cab is dispatched. There's a phone for incoming calls and a mike that goes out to all the cabs. We riders know that one well. Somehow, Randy, or Tarah or Gary or Gene keep a mental picture of every cab's location.
Calls often go out in bunches.
Seldom does a cab only take one person. That's for efficiency in transporting. The trick is to get several riders coming from the same area going to a similar location. If not available, the dispatchers wait to send a cab out. That's when we sit at Waremart and wait for an hour.