The tender, which has been published in the Official Journal of the European Union, specifies an entry floor height of 950-1000mm above the rail head, and the LRVs will need to meet German Federal Regulations on the Construction and Operation of Light Rail Systems (BOStrab).

The procurement is being managed by Rheinbahn, which will receive 46 of the vehicles, while the remaining 20 LRVs will be supplied to KVB. The deadline for expressions of interest is March 18, and the first pre-series vehicles are due to be delivered in 2017.