This dataset provides a data catalogue of axle-box accelerations with corresponding vehicle speed and travelled distance profiles measured on in-service light rail vehicles for rail infrastructure condition monitoring. This data set was created and published within the mFUND project OnboardEU. OnboardEU (grant 01F2192A) was funded as part of the mFUND innovation initiative of the Federal Ministry for Digital and Transport, Germany (Bundesministerium für Digitales und Verkehr, BMDV). As part of the mFUND funding programme, the BMDV has been supporting research and development projects relating to data-based digital innovations for Mobility 4.0 since 2016. The project funding is supplemented by active professional networking between stakeholders from politics, business, administration and research and the provision of open data on the Mobilithek. Further information can be found at www.mfund.de.