The Scope of this document is limited to the provision of eCall from a commercial vehicle prime mover / rigid body truck designed for conveying cargo (UNECE Category N). Within the context of 112-eCall (operating requirements defined in EN 16072)@ this document defines specifications for the provision of 112-eCall for regulated commercial vehicles@ including rigid body trucks and variants thereof@ prime mover and trailer combinations (sometimes called ??semi??s??@ road trains [one prime mover with multiple trailers]) and other regulated commercial vehicles (for example vans carrying medical supplies or radioactive material). As with the existing provisions for 112-eCall for Category M1/N1 vehicles@ these are specified within the paradigm of being OEM fit equipment supplied with new vehicles. The work of CEN/TS 16405 is adopted and extended in this document. (A revised edition of CEN/TS 16405(:2018) will remain the principal reference document for the content and definition of the commercial vehicle optional additional data set.) This document specifies the requirements for the use of 112-eCall by a commercial vehicle prime mover igid body truck and determines circumstances where it is appropriate to additionally provide new optional additional data as determined in CEN/TS 16405(:2018 or later) as Schema C for use in a packet switched environment which is not constrained by the 140 byte limit. Unless superseded by European Regulation on some future date@ all data schemas specified in CEN/TS 16405 are ??Optional Additional Data?? (OAD) concepts@ as enabled in accordance with EN 15722 as part of the minimum set of data. As OAD they@ and the elements within them@ are@ by definition@ ??optional?? with use at the discretion of the operator of the vehicle. NOTE 1 The provision of eCall from IVS located within trailers is not included in this document. NOTE 2 The provision of eCall for vehicles via the aftermarket (post sale and registration) will be the subject of other work@ and in respect of the operational requirements for any such aftermarket solutions for commercial vehicles@ will use this document as a principle reference point. NOTE 3 The 112-eCall paradigm involves a direct call from the vehicle to the most appropriate PSAP. (Third party service provision by comparison@ involves the support of an intermediary third party service provider before the call is forwarded to the PSAP). The specifications herein relate only to the provision of 112-eCall or IMS-112-eCall@ and do not provide specifications for third party service provision of eCall@ although in the case of 112-eCall for commercial vehicles@ links to third party provision of service aspects (such as cargo contents) may be required.