A method for measuring and displaying the track geometry of a track system uses a track-driveable permanent-way machine, comprising a control measurement system measuring the track position to be corrected before a lifting and lining device, an acceptance measurement system measuring the corrected track position after it, and output units displaying the measured values. The lifting and lining device is controlled depending on the measured values of the control measurement system and the acceptance measurement system to achieve a specified target track geometry. A three-dimensional position image is calculated from the curvature image (k.sub.(s)), longitudinal level image (h.sub.(s)) and superelevation image (u.sub.(s)) of the target track geometry, put into a perspective display, and displayed by the output unit, supplemented by measured error curves for track parameters of track direction, superelevation, twist, and longitudinal level.

A method for measuring and displaying the track geometry of a track system uses a track-driveable permanent-way machine, comprising a control measurement system measuring the track position to be corrected before a lifting and lining device, an acceptance measurement system measuring the corrected track position after it, and output units displaying the measured values. The lifting and lining device is controlled depending on the measured values of the control measurement system and the acceptance measurement system to achieve a specified target track geometry. A three-dimensional position image is calculated from the curvature image (k.sub.(s)), longitudinal level image (h.sub.(s)) and superelevation image (u.sub.(s)) of the target track geometry, put into a perspective display, and displayed by the output unit, supplemented by measured error curves for track parameters of track direction, superelevation, twist, and longitudinal level.

In a method for renewing sleepers of a track formed of rails and the sleepers, the placement of skids, which support a machine frame of a track-building machine on the sleepers, is preceded by the machine frame being intermediately supported on the sleepers. The two rails are then distanced from one another, while avoiding a breakage separation, in a track section that includes both the region of the skids and the intermediate support. After supporting the machine frame on the skids, the intermediate support is lifted off the sleepers and work is begun.

In a method for renewing sleepers of a track formed of rails and the sleepers, the placement of skids, which support a machine frame of a track-building machine on the sleepers, is preceded by the machine frame being intermediately supported on the sleepers. The two rails are then distanced from one another, while avoiding a breakage separation, in a track section that includes both the region of the skids and the intermediate support. After supporting the machine frame on the skids, the intermediate support is lifted off the sleepers and work is begun.

The present disclosure relates to a rail vehicle having a track stabilization unit for use in stabilizing rails into ballast. The rail vehicle comprises a frame and a track stabilization unit coupled to the frame. The track stabilization unit includes a base and a plurality of wheels disposed about the base. The wheels are configured to bias against rails of a railroad track. At least one of the wheels is coupled to a motor through a drive shaft such that rotation of the drive shaft drives rotation of the wheel. Related methods are described.

The present disclosure relates to a rail vehicle having a track stabilization unit for use in stabilizing rails into ballast. The rail vehicle comprises a frame and a track stabilization unit coupled to the frame. The track stabilization unit includes a base and a plurality of wheels disposed about the base. The wheels are configured to bias against rails of a railroad track. At least one of the wheels is coupled to a motor through a drive shaft such that rotation of the drive shaft drives rotation of the wheel. Related methods are described.

Track alignment reference system projectors having a modulated light source, in addition to arrays of light sources, optionally utilizing a lens are provided. Track alignment systems that utilize or may make use of cascaded devices are also described. Related systems and methods are also provided.

Track alignment reference system projectors having a modulated light source, in addition to arrays of light sources, optionally utilizing a lens are provided. Track alignment systems that utilize or may make use of cascaded devices are also described. Related systems and methods are also provided.

The purpose of the invention is a railway track (3) sleeper (2) squaring device and the machine which carries this device. The device comprises a first and a second positioning element (1) adapted to be located between pairs of sleepers (2) and for locating at opposite ends of the sleepers (2) and parallel to the direction of the railway track (3) where these positioning elements (1) can be extended in that direction with the first and second positioning element (1) being configured such that on extending them simultaneously to a pre-set value they push the sleepers (2) so as to produce squaring of these sleepers (2).

The purpose of the invention is a railway track (3) sleeper (2) squaring device and the machine which carries this device. The device comprises a first and a second positioning element (1) adapted to be located between pairs of sleepers (2) and for locating at opposite ends of the sleepers (2) and parallel to the direction of the railway track (3) where these positioning elements (1) can be extended in that direction with the first and second positioning element (1) being configured such that on extending them simultaneously to a pre-set value they push the sleepers (2) so as to produce squaring of these sleepers (2).