A Transportation Management System, or TMS, is software that helps companies plan, execute, track, and improve the movement of goods. It connects warehouses, carriers, customers, and managers through one control tower view of shipments and costs. This matters because transportation is often one of the largest logistics expenses and directly affects delivery speed, reliability, and customer satisfaction.
A good TMS turns complex shipping decisions into measurable, data-driven choices.
Key Facts
- Total freight cost = linehaul cost + fuel surcharge + accessorial charges + taxes or fees
- Cost per shipment = total transportation cost / number of shipments
- On-time delivery rate = on-time deliveries / total deliveries × 100%
- Truck utilization = loaded capacity / total available capacity × 100%
- Estimated arrival time can be updated using ETA = current time + remaining distance / average speed
- Route optimization balances distance, time windows, vehicle capacity, carrier rates, service level, and traffic conditions.
Vocabulary
- Transportation Management System
- A Transportation Management System is software used to plan, book, track, and analyze the movement of goods across transportation networks.
- Carrier
- A carrier is a company or service provider that moves freight by truck, ship, airplane, rail, or another transport mode.
- Route optimization
- Route optimization is the process of choosing efficient delivery paths while considering cost, distance, time, capacity, and service constraints.
- Freight visibility
- Freight visibility is the ability to track shipment status, location, estimated arrival, and exceptions in near real time.
- Dispatch
- Dispatch is the process of assigning shipments, vehicles, drivers, and pickup or delivery instructions for execution.
Common Mistakes to Avoid
- Choosing the shortest route automatically, which is wrong because traffic, delivery time windows, tolls, and vehicle limits can make a longer route cheaper or faster.
- Ignoring accessorial charges, which is wrong because fees for waiting time, liftgate service, detention, or special handling can change the true freight cost.
- Treating tracking data as perfectly accurate, which is wrong because GPS delays, missing scans, and carrier updates can create gaps that need exception handling.
- Maximizing truck fill without checking service requirements, which is wrong because over-consolidation can delay urgent orders or violate customer delivery windows.
Practice Questions
- 1 A company ships 240 orders in one week and spends $18,000 on transportation. What is the cost per shipment?
- 2 A truck has a maximum capacity of 26 pallets and is loaded with 21 pallets. What is the truck utilization percentage?
- 3 A TMS recommends a route that is 40 km longer than another route but avoids a congested city and meets all delivery time windows. Explain why the longer route may be the better logistics decision.