I've written about this before but it's fresh on my mind again because I just don't understand why there are certain people who MUST be lined up right in front of the train doors way before the train stops and door opens.
Here's an example of I'm talking about: A woman who has been standing at the back of the train since MacArthur (leaning against the in-between glass doors to the next car), behind crowds of other standing passengers in a very packed train, begins pushing her way through all those people as soon as the train enters the Transbay Tube. I've seen her before, she's a BART commuter. So I know that SHE knows from her daily rides that more than 50% of the train exits at Embarcadero and she really does not need to push and shove everyone that early just to line herself up in front of the exit.
As you know, no one moves towards the doors until the T.O. announces "Now approaching....Embarcadero Station" while the train waits for the train in front to empty out, and we feel the brakes really set in. This woman can easily walk out leisurely with the rest of the passengers at that time. It'll probably take her 10 more seconds to exit. But instead, she insists on pushing and shoving people out of the way, "excuse me, excuse me, I am getting out at the next stop," while her two huge bags bumps into arms, legs, and faces. I've heard people tell her a few time, "So are the rest of us, lady! Just wait!"
Aside from her, I've seen others who do the same thing. They push through crowds way before exit time in order to line themselves up right in front of the door.
Not sure why people do that! Maybe they have a connection to catch? That's the only logical explanation I can think of.