Abstract: A rail vehicle has a vehicle frame which, supported on on-track undercarriages, is mobile on the rails of a track. The rail vehicle includes a first measuring platform with a first inertial measuring system for recording a track course. A second measuring platform is arranged on the rail vehicle, with a second inertial measuring system and at least one sensor device for recording surface points of a track section. The second measuring platform and the second inertial measuring system enable the movement of the sensor device in the three-dimensional space to be recorded in a simple manner.

Abstract: A track measuring vehicle for recording a track geometry of a track includes a vehicle frame which has rail undercarriages and is mobile on two rails of a track. The vehicle also includes a first measuring base on which are arranged an inertial measuring unit and, for a position determination relative to each rail, at least one contact-less position measuring device. A lowerable second measuring base has measuring running wheels designed to be set upon the rails and is connected to the first measuring base via compensation measuring devices.

Abstract: In order to control a measuring system with a tacheometer mounted on a carrier trolley circulating on a railway track under construction and a target fastened to a railway construction machine, the carrier trolley is circulated on the railway track in a working direction from a starting position to an arrival position in the vicinity of a topographic arrival singularity. The carrier trolley is immobilized and an observation of the topographic arrival singularity is made. Then, with the railway construction machine having been brought into the starting position, an observation of the target is made. Finally, the coordinates of the arrival position of the carrier trolley are calculated as a function of the measurements made, of additional data relating to the starting position, and of positioning data of the topographic arrival singularity and data relating to a theoretical line of the track.

Abstract: The invention relates to a machine (1) having a machine frame (2), mobile by means of on-track undercarriages (3) on rails (4) of a track grid (5), and a stabilizing unit (8) which comprises a vibration exciter (15) for generating horizontal vibrations extending transversely to the longitudinal direction of the machine and flanged rollers (10) designed to roll on the rails (4). In this, a camera (11) is mounted on the machine frame (2) for recording a section of the track grid (5) set in vibrations, wherein the camera (11) is connected to an evaluation device (16) in order to derive from the recorded image data a resulting deflection (sr) of the track grid (5). In this manner, the amplitude (ar) of the sleeper deflection can be recorded, which is a measure of the actually effective vibration for stabilizing the track.

Abstract: To enable measurement of a displacement at a predetermined position in the case in which a measurement object remains stationary and also in the case in which the measurement object moves. A light projector and a scanning part are controlled to cause measurement light to sequentially irradiate different positions of the measurement object in a case in which a scanning mode is selected. On the other hand, the light projector and the scanning part are controlled to cause the measurement light to irradiate the same positions of the measurement object in a case in which a line mode is selected. The displacement of the measurement object is measured on the basis of a received-light quantity distribution output from a light receiver.

Abstract: To enable measuring a displacement at a predetermined position of a measurement object for a short time at a high accuracy. While a scanning mirror is moved in a first scanning range to cause measurement light to irradiate a measurement position, a first irradiation angle of the scanning mirror at the time the measurement light is emitted to the measurement position is obtained. While a scanning mirror is moved in a second scanning range that covers the first irradiation angle and that is narrower than the first scanning range, and a second irradiation angle at the time the measurement light is emitted to the measurement position is obtained. A light receiver outputs a received-light quantity distribution, and a displacement at the measurement position is measured on the basis of the second irradiation angle and the position in a second direction of the measurement position.

Abstract: To enable short-time measurement of a displacement at a predetermined position of a measurement object even when the position or the posture of the measurement object is changed. During operation of a displacement measuring apparatus, the position and the posture of a measurement object are determined by using position correction information, and a measurement position is corrected. The corrected measurement position is irradiated with measurement light. The measurement light that is emitted to and is reflected back from the measurement position is received by a light receiver. The light receiver outputs a received-light quantity distribution for displacement measurement, and a displacement at the measurement position is measured on the basis of the received-light quantity distribution.

Abstract: A continuous serpentine concrete beamway forming system and method for creating a hollow continuous serpentine concrete beamway are disclosed. The continuous serpentine concrete beamway forming system and method utilizes a flexible form material that has the ability to conform to curves, angles, and slopes of a target beamway system as intended. The flexible form material is used to form an armature that embodies a precise pathway of the target beamway system. The armature is contiguous throughout a plurality of connected beamway segments that collectively make up the target beamway system and that are precisely aligned to conform to the curves, angles, and slopes of the target beamway system. A part of the armature creates grooves on the surfaces of the connected beamway segments. The grooves are subsequently used to guide machinery that grinds the running surfaces to precise tolerances.

Abstract: A measuring apparatus for measuring surface topography of the slides to be measured of a guide rail is provided. The measuring apparatus includes a plurality of detecting probe and at least one moving device. The detecting probes are mounted on a probe support according to the surface topography of the slides to be measured. The moving device shifts the probe support or the slides to be measured on the cross section of the guide rail so that the detecting probe has a displacement relative to the slides to be measured. Each of the detecting probes has a corresponding coordinate system, and the corresponding coordinate system is different from each other. A standard part is utilized to correct deviations among the corresponding coordinate systems to the same coordinate system, and then the same coordinate system as a benchmark to measure the surface topography of the slides to be measured.

Abstract: Systems and methods for use in carrying out rail track corrections. A projector device is positioned on a vehicle deployed ahead of a rail maintenance vehicle and includes a Fresnel lens and a plurality of light emitting diodes arranged to provide a light beam that provides a uniform “spot.” The projector device modulates the light beam in such a manner that a pair of receiver receivers disposed on the rail maintenance vehicle can detect the light source and the light intensity and frequency of wavelength of light received into each receiver of a receiver pair is substantially equal. Recorded values may be used to triangulate the geometry of the section of track being worked, while a computer compares the previous section of track already corrected to the current section and makes calculations for desired corrections to be made at work heads on the rail maintenance vehicle.

Abstract: A track adjustment system for operating a permanent-way machine (17) which is displaceable on a track system (1) comprises computer-controlled lifting and lining devices adjusting the track position, a control measuring system measuring the track position in the region of the lifting and lining devices (14), an acceptance measuring system measuring the corrected track position, and a tamping unit (24) tamping a ballasted track of the track system (1). For the purpose of achieving an improved track lining result, the amount of the elastic springback (?cw) of the track panel, which is the result of a lining force (F) acting on the track, is calculated and said elastic springback (?cw) is considered in the target value lining specification in such a way that the track is displaced with the lifting and lining devices by the amount of the elastic springback (?cw) beyond the target position (0).

Abstract: A method for mapping a railroad track is provided. The method includes defining a plurality of track segments that form the railroad track and determining coordinates of each track segment. The method also includes storing the coordinates of each track segment in a database as map segments and linking the map segments stored in the database to create a multi-dimensional railroad track map.

Abstract: A train rail alignment and distance system. The train rail alignment and distance system is a durable, highly accurate, portable electronic measurement system that is used for determining both rail inclination and distance between substantially parallel train rail sections during the processes of railway construction, maintenance, and monitoring. The system is designed to work accurately across a wide temperature range and in extreme weather conditions. It is designed to be easily manufactured, configured and maintained. The system also includes several optional integrated features and functions such as: field calibration, factory configuration, GPS and/or USB integration, PC and/or Internet-based communications, and data logging, data storage, and data analysis capabilities.

Abstract: Measurement of a track position is carried out in successive measurement sections (15), wherein the relative track position is registered in each case with the aid of a long chord (17), formed by a laser beam (16), which serves as reference line of a measuring system (9). During this; an angle enclosed by the two long chords (17) of two successive measurement sections (15) is measured in order to thereby obtain a spatial curve reproducing the actual position of the track.

Abstract: A train rail alignment and distance system. The train rail alignment and distance system is a durable, highly accurate, portable electronic measurement system that is used for determining both rail inclination and distance between substantially parallel train rail sections during the processes of railway construction, maintenance, and monitoring. The system is designed to work accurately across a wide temperature range and in extreme weather conditions. It is designed to be easily manufactured, configured and maintained. The system also includes several optional integrated features and functions such as: field calibration, factory configuration, GPS and/or USB integration, PC and/or Internet-based communications, and data logging, data storage, and data analysis capabilities.

Abstract: Measurement of a track position is carried out in successive measurement sections (15), wherein the relative track position is registered in each case with the aid of a long chord (17), formed by a laser beam (16), which serves as reference line of a measuring system (9). During this; an angle enclosed by the two long chords (17) of two successive measurement sections (15) is measured in order to thereby obtain a spatial curve reproducing the actual position of the track.

Abstract: An end of train unit includes a positioning system such as a GPS receiver and is configured to transmit a message including the EOT unit's location when the EOT unit detects a loss of air pipe pressure and/or it is tipped over and/or a low battery condition is detected. In highly preferred embodiments, the EOT unit periodically re-transmits the message until an acknowledgment message is received. In some embodiments, information from the positioning system is used to create a signal as a substitute for a motion sensor. In other embodiments, information from the positioning system is used to determine the speed of the end of the train. End of train unit tracking is also performed.

Abstract: A train rail alignment and distance system. The train rail alignment and distance system is a durable, highly accurate, portable electronic measurement system that is used for determining both rail inclination and distance between substantially parallel train rail sections during the processes of railway construction, maintenance, and monitoring. The system is designed to work accurately across a wide temperature range and in extreme weather conditions. It is designed to be easily manufactured, configured and maintained. The system also includes several optional integrated features and functions such as: field calibration, factory configuration, GPS and/or USB integration, PC and/or Internet-based communications, and data logging, data storage, and data analysis capabilities.

Abstract: In a rail track system having transition points, a locomotive having a navigation system (such as a combined inertial/GPS location system) moves along an initially known track and enters the “halo” surrounding a track transition to begin data collection/logging to accumulate successive position information data points as the locomotive moves into, progresses through, and exits the “halo.” The collected data for movement within the “halo” is then subject to a best fit assessment relative to the data pre-stored in the track database.

Abstract: A remotely operated laser survey device for performing a runway survey on a rail system that supports a device such as an overhead crane. The survey device includes a laser assembly and a survey car. The laser assembly can include a self-leveling laser. The survey car includes an image acquisition device and can be self-propelled by a drive mechanism. Images obtained using the image acquisition device are transmitted to a remote computer for analysis. The analysis can include a centroidal analysis of the image. Deviation of the rails is compared to established standards and correction carried out if necessary. The image acquisition device can be triggered to obtain images based on movement of the survey car. The survey car can be centered on a rail of the rail system to ensure accurate results regardless of the condition of the rail.

Abstract: The invention relates to a method for measuring tracks in relation to a measuring plan of the track which contains the actual position of the track, in relation to an absolute coordinate system. A measuring platform (2) is guided along the track (1), whereon an inertia platform (6) is arranged, which is initialised, respectively, calibrated to the beginning of the measurement and is aligned in relation to the coordinate system. The inertia platform (6) detects the respective positions of the measuring platform (2) in relation to the coordinate system during the journey of the measuring platform (2). Positional data of the inertia platform (6) is periodically examined based on fixed points (9; 9?) which are arranged in the vicinity of the track and deviations in relation to the coordinate system are corrected by novel calibration, respectively, alignment.

Abstract: An end of train unit includes a positioning system such as a GPS receiver and is configured to transmit a message including the EOT unit's location when the EOT unit detects a loss of air pipe pressure and/or it is tipped over and/or a low battery condition is detected. In highly preferred embodiments, the EOT unit periodically re-transmits the message until an acknowledgment message is received. In some embodiments, information from the positioning system is used to create a signal as a substitute for a motion sensor. In other embodiments, information from the positioning system is used to determine the speed of the end of the train. End of train unit tracking is also performed.

Abstract: A method and apparatus for conducting an overhead crane runway system survey uses a survey apparatus that is alternately pushed or pulled by an overhead crane. The survey apparatus, having a wheeled carriage, includes survey sighting targets, e.g., prisms, that are visible to survey personnel on the ground. XYZ data is there collected and a rail alignment profile, a rail elevation profile, a rail span profile, and/or a crane skew profile may be generated. The data and profiles generated may reviewed to ascertain whether the overhead rails conform to alignment specifications. Further, crane skew data may be reviewed to determine whether the crane itself may be misaligned.

Abstract: A split axle assembly for obtaining gage measurements of a track including a first wheel with a first split axle, a second wheel with a second split axle, a first bearing for rotatably receiving the first split axle, and a second bearing for rotatably receiving the second split axle, the first bearing and the second bearing being positioned inboard between the first wheel and the second wheel. In one embodiment, a sliding barrel device is provided. In another embodiment, the first bearing is received in a first bearing body and the second bearing is received in a second bearing body so that they are axially movable relative to one another. At least one linear guide is provided to allow axial movement of the first bearing body and the second bearing body relative to one another.

Abstract: In a method of tracing a track geometry immediately ahead of a ballast pick-up device of a cleaning machine in a working direction, a first and a second measuring chord are guided on the track by a respective front and rear end point. A versine measured by a first versine sensor of the first measuring chord is stored, in connection with a distance measurement, for registering the rear end point of the first measuring chord as a desired position with respect to a local track point. After the rear end point of the second measuring chord has reached the local track point, the rear end point is displaced until a measurement value corresponding to the stored versine is reached by a second versine sensor, and thus the desired position has been attained.

Abstract: Device for monitoring the state of the substructure of fixed tracks, especially in the transition region of substructure supporting plates, measuring bolts, which, in vertical recesses, pass freely through the track plate above, being fastened at the ends of the substructure plates, which are to be monitored.

Abstract: The alignment of railway tracks may be monitored using an accelerometer (36) mounted on a bogie (24) of a railway vehicle to detect lateral accelerations, and a displacement transducer (38) to monitor the lateral displacements of a wheelset (27) relative to the bogie. The acceleration signals are digitised, and processed corresponding to double integration, so as to deduce the lateral displacements of the bogie, and in conjunction with the signals from the displacement transducer hence to determine the effective lateral displacements of the track. This can provide a more useful indication of the lateral positions of the rails than measurements of the gauge faces. Such equipment (16) may be installed in a service vehicle, and operate automatically, downloading resulting data to a remote base station at regular intervals.

Abstract: In a method of surveying a track (9), a first or mobile measuring vehicle (1) and a second or stationary measuring vehicle (2) are placed at a distance apart from one another on a track section to be measured. A reference line (14) is formed by a laser beam emitted from the stationary measuring vehicle (2). At the start of each measuring cycle, by using a GPS receiver (19), the relative position of the stationary measuring vehicle (2) with reference to a fixedly installed GPS reference station (29) located adjacent to the track section is determined, the said GPS reference station being known within a terrestrial coordinate system. The reference line (14) is aligned with the mobile measuring vehicle (1) on the basis of the determined position data, and the track surveying operation is carried out by advancing the mobile measuring vehicle (1) while changes of the actual track position relative to the reference line (14) are registered.

Abstract: A laser apparatus for monitoring the rails of a railway or tramway line, characterized by comprising at least two measurement units mounted on a railway or tramway carriage and operating at last on the inner part of the two rails, along with said carriage is made to advance, and a unit for processing the signals transmitted by said measurement units, each of which comprises at least one triangulation reading device.

Abstract: A device for monitoring the superstructure state especially of fixed railroad tracks, with a height sensor system, which is installed in a measuring vehicle, preferably constructed as a laser scanning system, for determining the height position of an anchor clamp and/or of the base of a rail and/or of a railroad tie.

Abstract: A method and apparatus for measuring the geometry of a rail for a railroad track which includes mounting first and second cameras in back to back relationship to create a single camera axis passing through the camera lenses and to define a coordinate system with an origin centered between the cameras on the camera axis. First and second targets are placed on the rail to be measured and spaced an equal distance from the origin between first and second cameras respectively. The first and second cameras record the position of the first and second targets and provide position signals from which the mid-chord value of a chord extending between the first and second targets is computed.

Abstract: A laser apparatus for monitoring the rails of a railway or tramway line, characterised by comprising at least two measurement units (4, 8) mounted on a railway or tramway carriage and operating at least on the inner part of the two rails (6), along which said carriage is made to advance, and a unit for processing the signals transmitted by said measurement units, each of which comprises at least one triangulation reading device.

Abstract: A light weight compact device used in a rail road track maintenance organization carried by a track inspector to measure the vertical difference in track or rail of the track under normal operating conditions of trains which does not obstruct the travel of trains over the tracks by using this device which is placed under the rail, locked in place to keep any part of the device from being struck by the wheel of the train or train equipment while still capable of measuring the vertical movement of the rail or track.

Abstract: A method and apparatus for measuring the geometry of a rail for a railroad track which includes mounting first and second cameras in back to back relationship to create a single camera axis passing through the camera lenses and to define a coordinate system with an origin centered between the cameras on the camera axis. First and second targets are placed on the rail to be measured and spaced an equal distance from the origin between first and second cameras respectively. The first and second cameras record the position of the first and second targets and provide position signals from which the mid-chord value of a chord extending between the first and second targets is computed.

Abstract: During traveling of rolling stock on a route, running velocity of the rolling stock is detected. Vertical acceleration is also detected at a carbody above spring rigging of truck and a component is extracted in a predetermined frequency range from the vertical acceleration. When an absolute value of the vertical acceleration in the frequency range exceeds preset limit vertical acceleration corresponding to running velocity, the rolling stock is judged as being derailed. In another embodiment double integral of the vertical acceleration is carried out every predetermined evaluating time to calculate a vertical displacement amount. In the case that the vertical displacement amount is negative and an absolute value thereof is not less than a predetermined reference value, it is then determined that the rolling-stock is derailed.

Abstract: The multi-sensor route detector system preferably consists of at least four sensors (three rail detectors and a truck angle detector), sensor power supplies, signal conditioning for the output of the sensors, and a computer performing pattern matching and logic functions to positively identify track features of interest. The system is not a stand-alone navigation system, but will interface with the rest of the vehicle navigation system and provide data over an interface. This data will include notification of passage of turnouts, whether or not the route changed through the turnout and possibly the type of turnout (i.e., number 6 left). From external sensors, the multi-sensor route detector will obtain a signal such as block distance pulse indicating distance traveled along the track. The best estimate of the vehicle position will also be sent to the multi-sensor route detector. Based on the present position, the multi-sensor route detector will access the appropriate turnout data from its internal database.

Abstract: In a method of tamping a track, the displacements between the two reference points relative to each other are recorded during a first advance of the track tamper along the track to form a first curve indicating an existing track position. On the basis of the first curve, correction values are formed and a second curve indicating a desired track position is computed on the basis of the correction values. The track is then repositioned to the desired track position during a second advance of the track tamper along the track in response to the correction values while the track is tamped.

Abstract: The position of a track is corrected on the basis of the independent and separate measurement of the level errors of each track rail, and by concentrating the correction work on the most egregious position errors. For this purpose, a sub-section of the track is delimited by a starting point and an end point, and each rail in this sub-section is lifted to a desired level which has been electronically determined and is matched to a contiguous track section which has not been corrected.

Abstract: The gauge and cess panels (3, 4) of a level crossing creep apart lengthwise of the track (1, 2) and need closing up again from time to time. A device (5, 24) for this consists of a member (8, 26) that engages under or over a rail (1) and has a portion (10, 27) extending transversely to the rail carrying a cam (6) or screw (28) for engaging the end of a panel (3, 4). When the cam or screw is turned, the reaction from the panel (3, 4) jams the member (8, 26) on the rail (1), and further turning forces the panel lengthwise of the track. Another device for gauge panels is a two armed toggle (29) with a cam (31) at its pivot (30), the arms (29) being in a shallow V with their free ends (32) braced against the insides of the rails (1).

Abstract: A method of correcting the position of a railroad track composed of laterally adjacent track sections connected by branch tracks comprises the steps of measuring the position of each individual track section relative to an absolute reference system common to both track sections and registering high points, thereby forming actual position curves, while parallel thereto actual versines of the track position are detected by means of a further, machine-specific reference system. A target position curve is then generated which is common to the measured track sections and composed of the registered high points of the individual measured track sections and design sections, located between said high points, which smoothen the trace of the actual position curves. Track correction values are determined by obtaining the difference between the actual position curve of a respective track section and the common target position curve.

Abstract: A measuring system includes an optical site reference, such as a reference line within a scope used in surveying, and a calibrated reference scale which provides measurements by optical comparison to the optical site reference. The calibrated reference scale includes centimeter sections which in turn include upper and lower stepped sections. The upper and lower stepped sections are symmetrical with respect to one another such that the upper and lower stepped sections can be easily distinguished from one another from significant distance. Each of the steps of each stepped section indicates a specific, corresponding offset within the stepped section. The symmetry of the upper and lower stepped sections is in the relative positions of the long and short reference members.

Abstract: A machine frame of a ballast bed rehabilitation machine is composed of two articulatedly coupled frame parts. A longitudinal inclination meter is mounted on the leading frame part, in the working direction, for detecting the inclination of the track. A laser reference system is provided for controlling the position of vertically adjustable track working units arranged on the trailing frame part, the laser reference system being formed by a laser transmitter, equipped for relative adjustment of a reference plane by means of an adjusting device, and laser receivers. A control device is designed for the time-delayed delivery, in dependence upon the distance travelled, of a longitudinal inclination value detected by the longitudinal inclination meter to the adjusting device of the laser transmitter. The reference plane, used to guide the working units, is adjusted in accordance with the detected longitudinal track inclination.

Abstract: A mobile machine for rehabilitating a track has a machine frame extending in a longitudinal direction and supported by undercarriages for mobility on the track in an operating direction, the machine frame being composed of a leading frame part with respect to the operating direction and a trailing frame part connected to the leading frame part by an articulation, with at least one working unit being mounted on the machine frame for adjustment relative thereto. A reference system for controlling the position of the working unit is arranged on the leading frame part and consists of a reference line extending in the longitudinal direction between two of said undercarriages, a measuring axle designed to roll on the track, and a measuring device connected to the measuring axle for detecting a movement, transversely to the longitudinal direction, of the measuring axle relative to the reference line.

Abstract: Equipment for non-contact measurement of the deflection of a road (2) comprises a self-propelled vehicle with a load (7) which influences at least one wheel (4), the speed of which is measured in the direction of travel. The equipment further comprises a laser device (8) from which at least one electromagnetic beam (9) is directed towards the rodway in the vicinity of the vehicle, and the Doppler frequency change in the reflection (9) is detected. An electronic circuit (10) continuously registers the results of the measurements and herewith the deflection at normal traveling speed.

Abstract: A rail misalignment detection system for use in verifying whether fixed span and moveable span rails on a fixed span and a moveable span of a rail bridge, extend within an acceptable range of misalignment when the moveable span is positioned in a closed alignment with respect to the fixed span of the bridge, comprises an optical beam transmitter and a receiver, one mounted on the fixed span and the other mounted on the moveable span, such that the transmitter directs a beam of collimated light to a photocell in the transmitter. The transmitter and receiver are mounted on the respective spans of the bridge such that their position relative to one another corresponds to the relative position or alignment of one set of the rails on the moveable span and fixed span of the bridge.

Abstract: At a machine for the establishing of a design--track position with a machine frame which runs on chassis and with a working unit coupled thereto, a measuring unit is in accordance with the invention directly placed on the machine frame for the working unit, resp. The measuring unit is, thereby, connected to a control device which controls the working unit in accordance with at least one parameter height position, lateral position and transverse inclination via a adjusting drive. The measuring unit includes an absolute measuring system for a registering of geodetically surveyed fixed points.

Abstract: A manual apparatus for facilitating railway track alignment and/or track profile measurements. The tool consists of two fastening units, each having a cord positioner designed to engage the rail head and to properly place a cord for measuring, a reel for storing and using the cord, and a direct reading ruler for measuring profile and alignment. Wherein, this manual tool can be used by a single person to quickly, effectively and accurately measure track profile and/or track alignment deviations.

Abstract: A new and improved laser beam track alignment safety device with a tube having an inner surface and an outer surface. A first metal housing has an opening therein. The opening of the first metal housing is secured to the tube. An indicator means is secured within the first metal housing. A second metal housing has an opening therein. The opening of the second metal housing is secured to the tube. An indicator means is secured within the second metal housing. A restriction plate is secured within the inner surface of the tube. The restriction plate has a transmitting aperture formed therethrough. A plurality of securement means, each of which, couples around the outer surface of the tube and couple around the rail.

Abstract: The invention relates to an arrangement and method for measuring and correcting the line of a track. The method comprises forming an optical reference beam between an emitter on an emitter bogie and a position-sensitive receiver on a measuring and correcting car, moving the measuring and correcting car for a measurement interval in sequences of a desired length towards the emitter bogie, monitoring the movement of the hitting point of the optical beam by the position-sensitive receiver, measuring lateral inclination of the track, positioning the position-sensitive receiver in relation to the track between the sequences of moving, and measuring the instantaneous values of the position of the hitting point of the optical beam and the inclination of the track, and using the measurement data for the shifting operations directed to the track.

Abstract: A detecting system for rail vehicles having at least one sprung rigid structure, for instance a bogie frame, and two axles, comprises photosensor position-detecting means applied to the structure and adapted to detect typical geometrical characteristics of the track and the relative position between the axles and the rails when the vehicle is running along the track and to supply electrical signals which are indicative of such geometrical characteristics and such relative position, and displacement detecting means also applied to the structure and adapted to detect relative displacements between the structure and the axles and to supply electrical signals indicative of these displacements. Electronic acquisition and processing means of these electrical signals provide a monitoring related to the configuration of the track and to the dynamic attitude of the structure and of the two axles.