What is the difference between the transfer seats for the elderly, the weak, the sick and the disabled on the bus and the ordinary ones?

The old, weak, sick and pregnant are a vulnerable group in terms of transportation (in fact, the same is true in life)

So several seats with different colors are specially set up.

If they take the bus,

the passengers sitting on these seats will first get up and give up their seats.

Secondly (if they are in these seats, they are vulnerable groups), passengers in other seats must take the initiative to give up their seats.