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If a driver is subject to work time requirements, what is the maximum period of work time permitted in any cumulative work day?
受工作时间规定约束的驾驶员，在一个累计工作日内，最多允许工作多久？
Under the standard rules, the maximum work time in a cumulative work day is 13 hours.
一般规定下，一个累计工作日内最多工作13小时。
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At least 10 continuous hours of rest are required before starting a new cumulative work day. The separate 70-hour cumulative work-period limit still applies.
之后须连续休息至少10小时才能开始新的累计工作日；累计工作周期另有70小时上限，不能因每天未超13小时就无限累积。