[quote=GreenPants
are otis controls the only one that actually stops the car electrically before dropping the brake?[/quote]

It doesn't sound like you are kidding...

The only traction elevators I know of that stopped on the brake were the old ac units from long ago. I don't know of any modern manufacturer that stops on the brake. Some have timers that must be adjusted, to ensure the brake is set before the drive turns off. The release of brake switch may trigger the shutdown of the drive, but I'm not familiar with everything on the planet, so others may chime in here.