ICT-VT - tilting InterCity DMU (Class 605)

There are still some non-electrified lines with long distance passenger trains which are in need of being speeded up. For these lines, a Diesel version of the ICT is currently being developed. 20 trains have been ordered in 1996 and were delivered from 1999 to 2001. With 200 km/h regular top speed, this are the fastest Diesel trains in Germany.

This project was originally called ICT-D or ICT-VT (VT = Verbrennungstriebwagen), meanwhile the name ICE-TD is heard as well.


The ICT-VT looks almost the same as the ICT, except that it has only four cars and of course no pantograph on the end cars, instead an exhaust stack on each car and resistor grids (for the electric brake) on the end cars.

Train composition

Each car has a Diesel engine and two traction motors.
605.5cab, 1st class (41 seats)
605.22 WC, crew compartment, galley, 2nd class (40 seats)
605.1family compartment (6 seats), 2nd class (45 seats), wheelchair space, 2 WC
605.02nd class (63 seats or 48 seats + space for 10 bicycles), cab


The interior of the ICT-VT is almost identical to the ICT. However, as the ICT-VT is shorter, it has no restaurant or bistro, but only a galley for meal service at the seat, with a small snack counter. Following the experience with the cab cars of push-pull InterCity trains with locomotives, 15 seats in the 2nd class end car can be removed to have space for 10 bicycles.

Ground plans of the ICT-VT (class 605)

1. end car
1st class with observation lounge

2. middle car
2nd class with galley/bar

3. middle car
2nd class with family compartment and wheelchair space

4. end car
2nd class with observation lounge

Drive concept and tilting system

While the ICT-VT is very similar to the ICT for the passengers, it has some technical differences. Every car has an underfloor 560 kW Diesel engine (Cummins QSK 19-R 750) and two self-ventilated 225 kW 3-phase AC traction motors which, unlike in the electric ICT, are situated in one bogie. The four Diesel engines are powering 3-phase AC generators, the rectified current is feeding a DC circuit going through the entire train. The DC is then converted into 3-phase AC by two water-cooled GTO inverters, each supplying four traction motors.

The tilting system, developed by Siemens and SGP, works now electro-mechanically (instead of the hydraulic system used on the electric ICT). The maximum tilt angle is 8°. This system has been successfully tested in one experimentally rebuilt train of class 610.

The train has electric brakes on the powered axles (with resistor grids on the middle cars) and disk brakes on all axles, as well as magnetic rail brakes for emergency braking.

One very interesting option is the addition of a (non-powered) transformer car (with pantograph) that would turn the ICT-VT in a hybrid train, which could switch off its Diesel engines on electrified lines and work from the overhead wire. However, this is just an option, trains equipped like this have not yet been ordered.

Technical data

end carmiddle cartrain
length27.45 m25.9 m106.7 m
bogie distance19 m
axle distance2.6 m
massempty: ~ 214 t
full: ~ 232 t
power (traction)1700 kW
power (total)2240 kW
top speed200 km/h
seats (1st class):41
seats (2nd class):154
weight/length~ 2.01 t/m
seats/length1.83 seats/m
weight/seat~ 1.1 t/seat
power/weight~ 7.95 kW/t
power/seat8.72 kW/seat

ICT-VT lines

It was planned to start operating the first lines in 2000, but there were huge delays, partly because of technical problems (mostly with the brakes), partly because the lines were not equipped for tilting trains fast enough. So there are still no public ICT-VT, but the trains can often be seen in test runs on the lines where they will operate in the future.

On 2001-06-10, regular service will start at last on two lines:

Since 2001-04-23, the first regular operations of class 605 have started. The following connections are run with double sets of class 605:

The ICE 1561/1668 was previously a single class 415 train, the other trains were previously locomotive-hauled. Until the timetable change on 2001-06-10, they can be used without paying a supplement. Keep in mind, however, that this is an "experimental" service, so these trains might always be replaced by locomotives (class 234) with normal InterRegio coaches.


Models of the ICT-VT


Roco has announced a H0 model of class 605, both for DC and AC, exactly in 1:87 scale, for 2001.