Vehicle dynamics

Worldwide measurements and tests. Performed by an experienced team.

PJM provides a large number of standardized technical and customer-specific tests for railway vehicles:

  • Technical specification for interoperability TSI
  • EN 14363: „Railway applications - Testing and Simulation for the acceptance of running characteristics of railway vehicles - Running Behaviour and stationary tests“
  • EN 12299: „Railway applications - Ride comfort for passengers - Measurement and evaluation“
  • EN 14033-1: "Railway applications - Track - Railbound construction and maintenance machines Part 1: Technical requirements for running"
  • UIC-Kodex 518: "Testing and approval of railway vehicles from the point of view of their dynamic behaviour - Safety - Track fatique - Ride quality"
  • UIC-Kodex 513: - "Guidelines for evaluating passenger comfort in relation to vibration in railway vehicles"


Excerpt from several tests carried out in accordance with EN 14363

  • Safety against derailment for railway vehicles running on twisted track according to Method 3 - Test on twist test rig and yaw test rig:
    On mobile test rigs designed by PJM, it is possible to determine directly at the customer's site the rotational resistance factor X and the wheel unloading factor ΔQ / Q.
  • Safety against derailment under longitudinal forces in S-shaped curves (EN 15839):
    Multi-body simulation by validated models
  • Sway characteristics SR:
    Method 2 – On-track tests: Measurement of lateral acceleration in vehicle body and cant deficiency in curves
  • On-track tests - Normal measuring method:
    Assessment of running safety, track loading and ride characteristics of the vehicle with direct measured forces between wheel and rail and accelerations in running gear and in the vehicle body
  • On-track tests - Simplified measuring method:
    Assessment of running safety and ride characteristics of the vehicle with measured lateral forces between wheelset and axle-box, acceleration at the bogie frame and accelerations in the vehicle body.


Further measurements and calculations:

  • Wheel profile measurement using standardized laser measuring devices
  • Calculation of contact geometry (equivalent conicity) using the software RSGeo
  • Track detection (curvature, GPS position, etc.) directly at the vehicle
  • Alignment with track milage


Helmut Gaber

  • Waagner-Biro-Straße 125
    8020 Graz, Austria

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