All mobile equipment shall have a reversing beeper fitted, and must be in good working order at all times.
All mobile equipment shall have a reversing beeper fitted, and must be in good working order at all times.
在操作移动设备，和驾驶移动设备在施工现场移动时，必须戴上安全带。
All mobile equipment shall have a reversing beeper fitted, and must be in good working order at all times.
在操作移动设备，和驾驶移动设备在施工现场移动时，必须戴上安全带。