Class 207M is a prototype series of Polish light

Diesel Multiple Unit A diesel multiple unit or DMU is a multiple-unit train powered by on-board diesel engines. A DMU requires no separate locomotive, as the engines are incorporated into one or more of the carriages. Diesel-powered single-unit railcars are also ...

s (a.k.a.

railcar A railcar (not to be confused with a railway car) is a self-propelled railway vehicle designed to transport passengers. The term "railcar" is usually used in reference to a train consisting of a single coach (carriage, car), with a dri ...

s). Only six were made in following configurations: * two cars - a set of ''207M'' power car and ''207Mr'' trailer-control car ( PKP designation SA101+SA121) * three cars - a set of: ''207Ma'' power car, ''207Mra'' trailer car, ''207Mb'' power car (PKP designation SA102+SA111+SA102)

History

By the end of the 1970s, steam traction in Poland was mostly retired. Non-electrified lines became operated with

diesel locomotive A diesel locomotive is a type of railway locomotive in which the prime mover is a diesel engine. Several types of diesel locomotives have been developed, differing mainly in the means by which mechanical power is conveyed to the driving whee ...

s. For short distance passenger traffic (mainly suburban trains) PKP was seeking a more economical solution than a heavy diesel locomotive pulling few cars. The obvious solution was the use of railcars. However, due to politics-related economical problems Poland was facing in 1980s, it wasn't until 1990 that the first cars were produced. The class 207M was developed in ZNTK Poznań by a team led by Polish renowned rail transport engineer Ryszard Suwalski. The concept prospected trains from one up to four cars in consist. Only 2- and 3-car versions were made, three of each. Again, due to economical difficulties class 207M never went into serious production. After 2001 a larger contingent of railcars/DMUs went into production and they were based on newer projects than 207M.

Technical data

{{PKP Locomotives Diesel multiple units of Poland