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 /rigid 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 Unless superseded by European Regulation on some future date, all data schemas specified in CEN/TS 16405 are "Optional Additional Data" (OAD) concepts, as enabled in accordance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.