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Police cars, taxi/cabs, and other special-purpose passenger cars are equipped with add-on devices such as blue-light, special horns, taximeter, digital radio, etc. In the past, such equipment was connected via discrete I/O lines or proprietary interfaces, e.g. RS-232, RS-485, J1850, or CAN. The CAN in Automation (CiA) international users and manufacturers group has established a technical group specifying an open CAN-based network for such car add-on devices. The physical layer is based on ISO 11898-2 (CAN high-speed), and the CAN data link layer (ISO 11898-1) uses the base frame format (11-bit CAN identifier). The selected application layer is compliant to CANopen (EN 50325-4). In order to achieve easy system integration, the group is specifying an application profile describing the content of the transmitted messages.

J1939-based networks are used in most of the in-vehicle networks in trucks and buses and in some off-highway vehicles. In Europe, many of the super-construction manufacturers like to use off-the-shelf, price-competitive CANopen devices originally developed for other applications fields. CANopen is a standardized CAN-based application layer and profile specification. In order to standardize the gateway functionality, a CANopen standardized truck gateway profile is introduced.

J1939-based networks are used in most of the in-vehicle networks in trucks and buses and in some off-road vehicles. In addition, some off-highway vehicles such as agriculture and forestry machines and military vehicles are equipped with J1939-based networks. Because in Europe, many of the super-construction manufacturers like to use off-the-shelf, price-competitive devices originally developed for other applications fields, they like to buy CANopen-based modules. CANopen is a standardized CAN-based application layer and profile specification. In order to standardize the gateway functionality, a CANopen device profile for J1939 truck gateway is introduced.