TheJ1939seriesofSAERecommendedPracticeshasbeendevelopedbytheTruckandBusControlandCommunicationsNetworkSubcommitteeoftheTruckandBusElectricalandElectronicsCommittee.Theobjectivesofthesubcommitteearetodevelopinformationreports,recommendedpractices,andstandardsconcernedwiththerequirements,