My suggestion to KORAIL

The other day, I posted a suggestion on the Customers' Voice section of KORAIL's Web site. I pointed out incorrect grammar in an English sentence appearing on a yellow warning sign on the floor of Dong Daegu Railway Station. They had acknowledged and accecpted my suggestion, and agreed to correct it. I noticed a few days ago that it has been corrected as promised (The corrected sentence is shown in the picture). I feel a sense of being productive and pride myself on playing a role, though small, in heping society go in the right direction. :))

Here's an email response from KORAIL:
안녕하세요? 김종호 고객님 매주 KTX를 이용해 주셔서 대단히 감사합니다.
고객님께서 말씀하신데로 철도공사에서 고객신뢰선에 사용하고 있는 "Only paid customers past this line."은 틀린 표현입니다. 고객님의 의견을 참고하여 "Only paid customers can cross this line."으로 정정하는 것이 맞습니다. 항상 관심갖고 지켜봐 주셔서 감사합니다!^^"