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For a standard-width vehicle, how much extra width beyond the normal maximum is allowed solely for load-securing fasteners?
标准宽度车辆仅因使用货物紧固件，可以在普通最大宽度之外额外增加多少宽度？
No extra width is allowed solely for load-securing fasteners: the allowance is 0 mm.
没有额外宽度额度，即0毫米。
阅读相关知识
Fasteners must fit within the applicable width limit. Exclusions for specified mirrors, lights or hubodometers do not extend to them. The usual maximum is 2.55 metres; permitted overdimension operations are outside this question.
紧固件须计入适用宽度范围，不能把某些镜子、灯具或轮毂里程表的指定排除项套用于它们。一般车辆标准最大宽度为2.55米；本题不涉及获得许可的超尺寸运输。