The HOS indices measure the average amount of drive time a driver is driving (HOS11) on their 11 hour clock and the average amount of time a driver is showing active on-duty or driving on their 14 hour clock. It is expressed in hours.
Fleet managers, executives in trucking companies, industry analysts, owner operators
The HOS indices will tell you just how efficient the drivers are utilizing their time. The more hours drivers are spending driving the more efficient they are. It is useful to see the impact of events such as holidays and weather when evaluating lanes.