The yellow line indicates the safety zone on the platform, and passengers are therefore required to stand behind that line for their own safety. A security guard will blow the whistle if passengers do not act accordingly.
Never pick up fallen items from the track. Please inform the security guard so that he can do it for you safely. In the case that the belongings cannot be retrieved during operating hours, BTS Staff will take your contact information to inform you when your belongings can be collected later from the BTS Staff within 24 hours.
For personal safety, passengers who have not boarded the train should wait for the next train and not attempt to rush onto the train or use any object or part of their body to obstruct the closing door.