Sterling TMS cancalculate the Estimated Time of Arrival (ETA) for each truckload andLTL shipment. This feature allows shippers and carriers to keep trackof when shipments are due to arrive. ETAs make scheduling more accurateand can help avoid backups at your docks.

If a calculated ETAis later than the planned arrival window or delivery appointment Sterling TMS sends an alert.Both shippers and carriers can subscribe to the Calculated ETA alert.

Sterling TMS uses the followingcalculation to determine an ETA:

• Sterling TMS calculatesthe total practical distance from the origin to the destination anddivides by 45 m.p.h. The resulting value is the time required to reachthe destination.
• Hours of service are calculated as 11 hours on (total drivingtime) and 10 hours off (rest period). If the time required to reachthe destination is greater than the 11 hours of service SterlingTMS adds a 10-hour rest break.
• If the Service Type is set to Team or Expedited Sterling TMS does not addthe 10-hour rest period for each 11 hours of total driving time.
• For a multi-stop shipment Sterling TMS adds the on-premisetime at each interim stop of the route.
• When Sterling TMS determineswhether to send an alert the system takes into account the ETAAlert Tolerance that the shipper defined on the EventAgentspage in Step 4 of Shipper Configuration.

Calculated ETAs are generated for the following events:

• Arrivals and departures for truckload and LTL shipments and orders
• Current positions sent by the carrier for truckload and LTL shipmentsand orders

Calculated ETA for Arrival and Departure

Ifan arrival or departure event occurs at a stop Sterling TMS calculatesthe ETA for each subsequent stop on the itinerary.

For example the truck departs from Stop A. Sterling TMS calculatesan ETA from:

• Stop A to Stop B
• Stop B to Stop C
• Stop C to Stop D

Calculated ETA for Current Position

If acarrier sends in a current position event Sterling TMS searches forthe last departure or arrival timestamp and then calculates an ETAfrom the current position location to each subsequent stop on theitinerary.

For example:

1. The carrier sends in a current position update for Location X.
2. Sterling TMS determinesthat the last event timestamp was a departure from Stop B.
3. Sterling TMS calculatesthe ETA from Location X to Stop C.
4. Sterling TMS calculatesthe ETA from Stop C to Stop D.