You'll notice that some of the seats are different colors, and while this may differ from your area or bus line, in this instance the yellow seats are reserved for those who are pregnant, have mobility issues, and/or are traveling with small children.
Here is a sticker attached just beneath the window of applicable seats. You’ll see similar reserved seating in subways as well.
An alternative design skips the stickers and instead uses a yellow covering on the seat with icons for intended riders printed on it.
Just because a chair is not yellow doesn’t mean it isn’t reserved. The pink are reserved just like the yellow seats but with extra priority for riders who are pregnant, which is similiar to the pink colored seats reserved for pregnant women in some subway lines.
The general reserved seating sticker has been placed near the window, just like previous examples, but they also installed an additional sticker in a pretty font that states the person sitting here will give birth to new life in a few months from now. If you want to see the pregnancy sticker more clearly, click the picture to see a larger version of just that sticker.
Here are several seats that are yellow and several that are pink. The two yellow seats on the left are reserved for a rider in a wheelchair. As these seats need to fold against the wall, the support under them is reduced to accommodate this.
Where there doesn’t seem to be seats reserved solely for pregnant women, like seen in the subway, there is seating exclusively reserved for those in a wheelchair. For obvious reasons, these are only available in low-floor buses. Sometimes the display at a bus stop will tell you if a bus is wheelchair friendly.
Here is a seat on the left side of the bus directly across from the exit. We see a handle to grab onto. We can see the bell to signal the driver you want to exit is now lower to better accomidcate someone in a wheelchair. And we can also see a small white and red monolingual sign.
Here is a close-up of the sign. 장애인 전용 (障碍人專用, jangaein jeonyong) can be translated as “reserved for the handicapped.”
Here is a seat on the right side of the bus just in front of the exit. We can see some sort of white attachment device on the ground. Also visible here is the wheelchair sticker we saw previously.
Let’s move to the side of this seat so we can see it more easily. The sticker is more visible and we can also see a a handle to grab onto; just like the seat on the left. Also there is a white box with several buttons and directions. While we don’t have a good image of the box, if you want to see the images and words more clearly, click the picture to see a larger version of the image.