The main HOS limits measure different things. Having time on one clock does not create time on another.
11-hour driving limit
After 10 consecutive hours off duty, a property-carrying driver may drive up to 11 hours under the basic federal rule. Fueling, inspections, and dock work do not use the 11, but they can use other clocks.
14-hour window
The basic driving window ends at the 14th consecutive hour after coming on duty following the qualifying off-duty period. Ordinary off-duty time during that window does not extend it. A driver can therefore have drive time left and still be unable to drive because the 14 has ended.
60/70-hour cycle limit
A driver may not drive after accumulating 60 on-duty hours in seven consecutive days or 70 hours in eight consecutive days, depending on the carrier's operation. Driving and other on-duty work both use cycle time. A qualifying 34-hour restart can reset the period, but the calculator asks only for the cycle balance currently shown on the ELD.
30-minute break
After eight cumulative hours of driving without a qualifying interruption, the driver needs at least 30 consecutive minutes of non-driving time before driving again. The period may include on-duty-not-driving time. Its effect on the cycle therefore depends on the duty status used.
One trip can run out three different ways
Suppose a run needs six driving hours and seven elapsed hours after a fuel stop. Six hours on the drive clock is not enough if the driver has only five hours left on the 14. Seven hours on the 14 is not enough if only five cycle hours remain and the stop is on duty. The lowest applicable balance controls the basic plan.
This is why looking only at the large driving-time number on an ELD can be misleading. Read the drive, shift, cycle, and break information together before accepting a run that uses most of the day.
Exceptions and sleeper-berth provisions can change a specific case. Do not assume one applies merely because a basic-clock calculation is close.