At the IRSA railway conference VIA-Con presented an overview of various methods and calculation models to determine dwell times. Practical projects show that the dwell time investigation on the platform plays a key role in order to record amongst others the actual passenger interchange times and causes of delays for dwell time exceedance. For the survey VIA-Con uses its own specially developed app, adapted to the respective task. In combination with the evaluation of the operating data, a package of measures for the goal of short dwell times with high adherence could be developed even without a census of boarding and alighting passengers. VIA-Con also published a matching article about dwell time analysis in the current ETR.