The metro Barcelona (TMB) has decided to replace the old radio communication system with a new DMR Tier III system in 2016. Adtel & Hytera Mobilfunk was awarded the contract to implement the radio system including terminals and ErvoCom was selected to equip all trains with the DMR TRS2090 Train Radio System. The Cab Radios for the Barcelona Metro were customized to reorient the screen and controls of the CoCo2167 with a 90° rotation as well as integrating an MVB interface for the rolling stock of CAF and Alstom into the ZSE. The delivery took place in 2019 in several batches, so that a total of 344 of the Train Radio System TRS2090 with HMI CoCo2167 were installed.