After
his doubts in the 2 rail road Eugene Langen built
an einschienige road straight through his sugar factory in Cologne in October, 1893. This system found very good to long because the
car could also go at bigger speeds by the curves. The maximum speed lay with 60 km/h. This road
could oscillate in the state and during the journey around 15 ° to both sides. This
was not possible with the 2 rail road. From this innovation hoped
to long for a slightest material wear and was persuaded of this system.
He called this monorail soon "suspension railway". The einschienige overhead conveyor with 2-wheeled bogie on a driving rail is for bigger distances and speeds.