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Under standard mass limits, what is the maximum load on a stand-alone standard single-tyred single axle, within tyre and axle ratings? Exclude multi-axle sets and permits.
标准质量限制下，独立标准单轮胎单轴在不超过轮胎及车轴额定值时，上限是多少？不涉及多轴组或特别许可。
The standard maximum for the stand-alone standard single-tyred single axle described is 6,000 kg, within manufacturer tyre and axle ratings.
题中普通独立标准单轮胎单轴，上限为6000公斤，并须符合制造商轮胎及车轴额定值。
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This question excludes special steering-axle limits within multi-axle sets and permits. Lower applicable limits must still be observed.
本题不涉及多轴组中转向轴的特别限值或许可。允许质量还取决于其他适用限制，较低值仍须遵守。