單選題 · 選擇一個答案
What is the maximum speed limit for an ordinary heavy truck, subject to any lower posted limit?
服從更低道路限速的前提下，普通重型卡車的最高限速是多少？
An ordinary heavy truck has a maximum speed limit of 90 km/h.
普通重型卡車最高限速為每小時90公里。
閱讀相關知識
Observe any lower posted limit. Weather, road conditions, load and visibility may require a lower safe speed; 90 km/h is not permission to use that speed everywhere.
道路標示限速較低時服從較低值；天氣、路況、載重及視距還可能要求更慢。90公里不是在所有路段都可行駛的許可。