Stadler has released results from recent technical modifications and measurement runs on the TINA tram in Darmstadt, demonstrating that changes to the vehicle’s running gear have led to a measurable reduction in vibrations during operation.
At the measurement point that previously recorded the highest values, the assessed vibration level was reduced by up to 51 percent. Across all measurements, the average reduction was around 33 percent.
Darmstadt tram
© Stadler
Following modifications to the TINA tram’s running gear, measurement runs were carried out in December. The data have since been analysed and confirm that the optimisation of the wheel design has a demonstrable effect, with the extent of the reduction depending on local track and structural conditions.
The measurements were conducted by an independent, accredited testing institute in accordance with the relevant standards. The results were then subject to detailed technical evaluation.
The measurement runs took place at three representative sections of the Darmstadt network. The locations were selected by Stadler based on technical criteria.
Tests were carried out using one modified TINA vehicle alongside unmodified reference vehicles, allowing the effects of the changes to be assessed under comparable conditions. Measurements were taken in line with DIN 4150 standards.
The evaluated data show lower vibration levels for the modified TINA tram overall. The most noticeable reductions were recorded on Wilhelm-Leuschner-Strasse.
Stadler now plans to refine the changes further and prepare them for series implementation.