A block train is a full freight train made up of wagons of the same type that runs from a single origin to a single destination without wagons being detached or added along the way. A container train, by contrast, describes the type of cargo: a train carrying containers can be operated as a block train, but container wagons that are attached to other trains in single wagonload operations are not considered a block train.
Definition: mode of operation or type of cargo?
According to the RailNetEurope definition included in the terminology collection of the European Union Agency for Railways (ERA), a block train is a freight train whose wagons all have similar characteristics and which runs as a block from a single origin to a single destination without being remarshalled along the way. The EU technical specification for telematics applications for freight (TAF TSI) defines it as a direct train made up of only as many wagons as necessary, running between two transhipment points without intermediate shunting.
"Block train" is therefore a mode of operation, whereas "container train" describes the type of cargo carried. The two terms are not alternatives to each other: a train that carries only containers between two terminals and is not split along the way is both a container train and a block train at the same time.
Three modes of operation compared
| Feature | Block train | Container block train (combined transport) | Single wagonload transport |
|---|---|---|---|
| Shipper | Usually a single shipper or a single cargo | Several customers consolidated by an operator | Many shippers |
| Shunting en route | None | None | Wagons are detached at marshalling yards and attached to other trains |
| Typical cargo | Ore, coal, grain, cars, chemicals | Containers and swap bodies | Single-wagon industrial loads |
| Predictability of transit time | High | High | Lower |
| Volume requirement | Enough cargo to fill a whole train | The operator's total volume | A single wagon is enough |
Advantages and limitations
The greatest advantage of the block train is time and reliability. As there is no waiting at marshalling yards, transit time is shorter and more predictable; as the wagons are handled less, the risk of damage is also lower. For large volumes it offers a unit cost advantage. Its limitations relate to volume: if the train is not full, the cost of unused capacity is passed on to the cargo owner, and if no return cargo can be found, empty wagon returns increase costs. Line capacity and train paths must also be planned in advance.
Use on Europe–Türkiye–China routes
Container block trains are widely used for rail transport between China and Europe. According to the definition of the Trans-Caspian International Transport Route, the Middle Corridor starts in South-East Asia and China and reaches Europe via Kazakhstan, the Caspian Sea, Azerbaijan and Georgia. On this route, the term "block train" should be considered separately for each leg:
- Change of gauge: China and Türkiye use standard gauge (1,435 mm), Kazakhstan and Georgia broad gauge (1,520 mm). At the transition points, containers are transhipped or bogies are changed. The change on the Türkiye–Georgia link is explained in the entry on the Baku–Tbilisi–Kars railway line.
- Sea crossing: On the Caspian Sea, containers are transferred to a ship or ferry; the train is physically split here.
- Consignment note: CIM is used in Europe and SMGS in the CIS countries and China; details are in the entry on SMGS and CIM.
Block train or single wagonload?
- Measure the volume: If there is regularly enough cargo to fill a whole train, a block train is considered.
- Determine the terminal: Check whether the loading and unloading points can accommodate the train length.
- Choose the wagon type: container flat, hopper, tank or covered wagon.
- Operator and path: The trip schedule is planned with the railway undertaking or combined transport operator.
- First and last mile: The link between the terminal and the factory is usually made by road via container transport.
If volumes are irregular, booking space on operators' shared container block trains or using single wagonload transport is a more flexible option. For how rail freight works in general, see the entry on rail freight transport.