More about Jo-Jo-train will in time apear here on this page.



1. Lenght of train = number of  shuttles in the train

2. Feed train

3. IC3 train

4. Talent 3 EMU train

5. Service and maintenance of shuttles

6. Service aboard the train

7. Cleaning and supply


1. Lenght of train = number of shuttles in the train

The overhead contact line, above the main track, can supply up to 1000 Ampere. If we, as in Sweden today, choose the voltage 15,000 Volts, then the control shuttle can receive a maximum of 15 megawatts. If each shuttle is assumed to need a maximum of 0.6 megawatts, the maximum applied power is sufficient for at least 15 / 0.6 = 25 shuttles in the train. If we instead choose the supply voltage 25,000 Volt then we can have at least 41 shuttles in the train. With longer trains, the operating economy improves, but there is an optimum depending on the energy loss associated with the docking/undocking of shuttles. It is advantageous to have more frequent train departures in order to manage a larger total transport capacity, ie we prefer to use shorter trains as compred to longer trains. Combining freight and passenger transport shuttles in the same train results in the possibility to have a relatively higher frequency of trains even at times when there is a lower need for passenger transport.

2. Feed train

On tracks that extend more than 20 kilometers from the main line, feeder trains run. The battery capacity corresponding to the 20-kilometer range of a passenger or cargo shuttle is not set in stone. The argument is that most stations seem to be within that range of the main line. The main line is built above our motorways and they are of course located close to suitable station locations. The number of stations far away from the main line seems to be a smaller part of the whole and thus to equip all shuttles with a capacity larger than e.g. 20 kilometers is not economically defensible. We introduce feeder trains to serve stations further away. They have a control shuttle that distributes power to the shuttles in the train. The docking procedure is analogous to that of the usual Jo-Jo trains.

3. IC3 train 

On the so-called IC3 trains (Inter City 3 carriages in the train set) there are rubber buffers at both ends and fully automatic leashes. These trains were developed to be able to quickly divide long trains to lengths that were accommodated on the ferries across Stora Bält in Denmark. When such IC3 trains = Öresund trains are connected, you can open doors and walk freely between the connected train sets. On a journey from Copenhagen to Malmö, passengers who are going on to Helsingborg are asked to go forward in the train and those who are going to Karlskrona to take a seat further back, as the train in Malmö is quickly and elegantly divided into two separate trains.

4. Talent 3 EMU train

Bombardier is currently building a Talent 3 EMU train, which with a pantograph has a top speed of 200 kilometers per hour. With battery operation its the top speed shrinks to 160 kilometers per hour and a range of 100 kilometers. It only takes 7 to 10 minutes to charge its battery system. This train set 104 m long and takes 300 seated passengers in its six carriages. The technology in this train should be able to be adapted to the needs of the Jo-Jo train without major adjustments.

5. Service and maintenance of shuttles

In the normal railway context service and maintenace takes place close to or in direct connection with the large end stops (railway workshops, marshalling yards, vending stations, laundries). The Jo-Jo trains have no end terminals. The Jo-Jo train runs continuously. No stations are end stops. Ranking is not needed at all. Other service and maintenance can advantageously be placed in smaller towns. The land is available att relatively low cost and jobs are placed locally. Life in the smaller town is given vitality.

6. Service aboard

Passenger trains departing from a station or docking from a Jo-Jo train should perhaps have a train host on board. Appropriate tasks could above all be to help travelers. When will I arrive? When should I go to the last shuttle? Am I getting to my terminus now in this shuttle? Where should I sit during the trip? When does my connecting forward transport take place? Can I get help with taxi ordering?

Coffee on board? Maybe not needed. The longest travel time is about 2.5 hours. Coffee and accessories can be sold at the stations. The traveler can bring their own to nibble on. Clean water is in the tap in the toilets. Non-functioning vending machines, littering, more veneer - we get more problems. Easiest if no sales take place on board. Anyone who wants something can bring it themselves. Always equal relationship. Own responsibility.

7. Cleaning and supply

Passenger trains on the main line run continuously, e.g. 18 hours a day. For six hours a day, there is basically no passenger or freight transport on Jo-Jo-han. During this time, shuttles can be cleaned properly and loaded with fresh water, toilet paper etc. But already during the 18 hours of continuous operation, there is of course a need for cleaning etc. In many workplaces, cleaning is carried out during normal working hours. The janitor works his way successively through the workplace, room by room. The employees take a short break from their work. Take a coffee. Making a call. Lifts to the feet. Discuss with a colleague, etc. It works. Of course, it can also work on our passenger shuttles.

Cleaning of toilets and corridors can take place at the same time as the train rushes forward. During the worst rush hour, it is of course inappropriate / difficult, but at low and medium traffic it should be possible. As for clean water and so-called black water (wastewater), this can be continuously pumped from and to the last shuttle via the fully automatic connections between the shuttles. It can thus arrange the transport between the Jo-Jo trains and stations.

With continuous supervision, the vehicle fleet is efficiently utilized and travelers always have a clean and functional environment. With some training, these janitors could also perform simpler service repairs. Toilets should always work and trash cans should not be overcrowded.

Topics to be handled, described.

Transport capacity - up - down.

Number of trains - shuttles for persons and goods.


  • Control shuttle
  • Person shuttle
  • Load shuttle

Train = shuttles for person respectively goods in the same train