Transport Management Systems (TMS) and Fleet Management Systems (FMS) are closely related, and many operators eventually use both — but they are built to answer different questions.
A TMS is focused on the movement itself: orders, trips, dispatch, routes and the customer-facing side of transportation. It answers questions like 'What needs to move, where, and for whom?' and 'Has this shipment been billed?'
An FMS, by contrast, is focused on the vehicles themselves, independent of any specific trip or customer. It manages the vehicle master record, driver assignment, fuel consumption, mileage, maintenance schedules, tyres, spare parts and vehicle-level costing. It answers questions like 'What is this vehicle costing us to run?' and 'When is this vehicle due for maintenance?'
In practice, the two systems are complementary. A TMS tells you a trip happened; an FMS tells you what that trip cost in terms of fuel, wear and maintenance risk. When TMS and FMS data are connected — as they are between SALUNI CargoOS/TransitOS and SALUNI FMS — operators get a complete picture: revenue and service from the TMS side, and true operating cost from the FMS side.
Businesses that only implement a TMS often have good visibility into trips and billing but a blind spot around vehicle costs and maintenance risk. Businesses that only implement an FMS have the opposite problem. The most effective setup connects both, which is why SALUNI Systems designs its transportation products to integrate rather than operate as isolated tools.