Bus. Crowded. Move.
Please move to the rear.
If you are familiar with public buses in Singapore, you may have heard the bus captain shouting the phrase to passengers when it's the morning/evening rush hour. Or you may have seen these reminders printed and placed in the bus' advertisement slots.
Buses are buses are buses. Whether they are buses in Singapore, Hungary, Cuba, they are buses. Likewise, SMRT and SBS buses are like MDIS' shuttle bus.
Therefore, I urge students to take the "please move to the rear" call and... move to the rear of the bus when you are the person standing at the back, and see a whole crowd of your peers waiting on the crowded sidewalk, waiting to get into the bus.
Because, really, it is only courteous to do so.