Concrete sleeper layer
A self propelled machine that places sleepers at regular spacings.
Runner and rail positioning machine:
spacing order and positioning according to the axis of the existent track of the frame bearing track;
runner laying on the rails;
separation and alignment of the new rails (operation which can be led at the same time that the previous operation is being led).
You can notice on the picture, the regularity of the distance between each tine of the wheel which corresponds to the separation of the rails, that is to say generally 60cm.