แสงสีฟ้า, ไซเรน, รถพยาบาล, ตำรวจ, สัญญาณเตือนภัย, กรณีฉุกเฉิน, เบา, ความปลอดภัย, กู้ภัย
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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