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An ordinary truck towing a heavy trailer (trailer GLW over 3,500 kg) has a gross combination weight of 14,000 kg. What is the lowest required full licence class, excluding special tractor exceptions?
普通卡车牵引重型挂车（挂车GLW超过3500公斤），组合GCW为14000公斤，不涉及特殊拖拉机例外时，最低需要哪类全驾照？
Class 3 is the lowest required full licence class.
Class 3。
阅读相关知识
The ordinary-combination range is 12,001 to 25,000 kg GCW. A rigid vehicle with a light trailer can fall under different provisions; this question specifies a heavy trailer. A higher full licence may also allow the vehicle, but the question asks for the lowest class.
普通组合车辆GCW为12001至25000公斤属于Class 3范围。符合条件的刚性车拖轻型挂车可适用其他类别规定，本题特意限定重型挂车；持更高类别全照可能也获准驾驶，但此处问最低类别。