Is it possible to install direction indicator showing the opening door? Also is it possible to make the priority seat more obvious in the Metro car?｜Kaohsiung Metro

All Metro cars are responsible for passenger delivery. In addition to the train broadcast and the electronic marquee displayed on top of the door that provide passengers clear visual indications. Currently, all priority seats in the cars have stickers and reminders that passengers should put in consideration for other passengers in need. In the future, we are considering purchasing cars that places priority seats in different color, for easier identification. Furthermore, broadcasting in the station and in the car are made to remind passengers to given seat when need to.