Unable to drive. A peace officer can order your drivers out
of service if they drive after reaching the maximum number
of on-duty hours allowed under their cycle. Only your driver
is out of service, not the truck. You can replace the driver.
A typical OOS declaration could last 10 or more hours
depending on the violation e.g. A driver with false logs
will be put OOS for 72 hours and it could go beyond the
72 hours until the log is rectified.