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For a heavy full trailer, the maximum rear overhang including its load is the lesser of:
重型全掛車連同所載貨物，其最大允許後懸長度應取以下哪組數值中的較小值？
For a standard heavy full trailer and its load, maximum rear overhang is the lesser of 4 metres and 50% of the wheelbase.
標準重型全掛車連同貨物，後懸不得超過4米與軸距50%中的較小值。
閱讀相關知識
Measure from the rear axis to the rearmost part of the vehicle or load, not from the end of the body. Full trailers and semi-trailers have different limits.
後懸從後軸基準線量到車輛或貨物最後端，不能從車廂尾端開始算。全掛車和半掛車採用不同限制，不可混用。