SAE J3081â„¢ MAR2026 is an SAE International Information Report addressing acceleration and deceleration control issues for heavy-duty trucks and buses greater than 10,000 GVW. The report establishes criteria and rationale for prioritizing operator control inputs when multiple vehicle systems issue conflicting commands.
This revised edition addresses the transition from mechanical controls to electronic and drive-by-wire systems, including antilock braking, traction and stability control, hybrid and battery-electric systems, steer-by-wire, Advanced Driver Assistance Systems (ADAS), and Autonomous Driver Systems. It provides general control prioritization guidance, communication link message prioritization considerations, and recommendations for fault-tolerant vehicle control strategies.
The report references SAE J1939, ISO 26262, applicable Federal Motor Vehicle Safety Standards, and related braking and accelerator control requirements. It supersedes SAE J3081 OCT2020 and was prepared by the SAE Truck and Bus Brake Systems Committee.
Application Scope: Heavy-duty trucks and buses, vehicle control systems, drive-by-wire systems, braking and stability controls, ADAS, autonomous driving systems, hybrid vehicles, and battery-electric vehicles.
