When using the “16-hour exception,” must a driver comply with the 5-duty-tour provision after getting a 34-hour restart?

Yes. Under the 16-hour short-haul exception in 395.1(o), the driver must return to the normal work-reporting location and be released from duty at that location for the previous 5 duty tours the driver has worked, regardless of whether or not the 34-hour restart provision is being used. So if a driver wishes to use the 16-hour exception after taking 34 hours off, then the driver must have returned to the normal work-reporting location and have been released from duty at that location for the previous 5 duty tours.