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Within standard dimensions, what is the maximum width of an ordinary heavy truck including its load?
标准尺寸的普通重型卡车连同货物，最大宽度是多少？
An ordinary heavy truck and its load must normally be no wider than 2.55 metres, with no more than 1.275 metres on either side of its longitudinal centre line.
标准尺寸的普通重型卡车连同货物，总宽通常不得超过2.55米，中心线任意一侧不超过1.275米。
阅读相关知识
Both the overall width and the limit on each side apply. Special vehicles, specified fittings and overdimension operations have separate provisions outside this question.
总宽和单侧伸出限值须同时满足；特殊车辆、附属装置和超尺寸条件另有规定，本题不涉及。