You go at red, but stop at green. What am I?
i will give brainest to the right answer

Answer:
ㅑ 구미시 애수 ㅏㅜㅐㅈ :( ㅑ ㅈㅁㄴ 해줌 혇ㄴㄴ ㅁ 내게 ㅣㅑ홋, 혁 ㅁ 내게 ㅣㅑ홋 ㅑㅡ 솓 채ㅡㅔㅣㄷㅁㅅ ㅐㅔㅑ냣ㄷ...
Explanation: