SAE Level Name

Execution of Steering and Acceleration/Deceleration

Monitoring ofDriving

Environment

FallbackPerformance ofDynamic Driving

Task

SystemCapability

(Driving Modes)

0 No Automation Human DriverHuman Driver

Human Driver Human Driver N/A

1 DriverAssistance & System Human Driver Human Driver Some Driving

Modes

2 PartialAutomation System Human Driver Human Driver Some Driving

Modes

3 Conditional Automation System System System Some Driving

Modes

4 HighAutomation System System System Some Driving

Modes

5 FullAutomation System System System All

Driving Modes

Human DriverMonitors the Driving Environment

Automated Driving System (“System”)Monitors the Driving Environment

Source: SAE International - Standard J3016

SAEINTERNATIONAL

Levels Of DrivingAutomation ForOn-road Vehicles

Braking

Driving

Identify laneof travel

Identify obstacles

Determinepath

・Camera ・Distance Sensor ・Acceleration Sensor ・Yaw Sensor

Driver

Surrounded info.

Vehicle control

Steer vehicle Eyesight, acoustic sense, feeling

Transfer

Domain SteeringVehicle control

Transfer information

Steeringangle,

Vehiclevelocity

ADASAdvanced Driver Assistance Systems

Technical Domain

Steering actuator

After the next generation Future product

Steering wheel

Column

Current

Intermediate shaft

EPS

Next generation Development

Steering wheel

Enhanced redundancy

ADAS level 3 and 4

Backup power supply

Responding up to ADAS level 2

Redundant MCU

Utilizing JTEKT’s own control system and safety concepts

ADASAdvanced Driver Assistance Systems

Increased flexibility in transferring road feedback to the steering wheel

Steering wheel operation can be independent of vehicle behavior

Increased packaging flexibility

JTEKT Solutions

Steer By WireTechnology

ADAS Steering Systemsfor Large VehiclesAdvanced Driver Assistance Systems

Hydraulicdevice

Hydraulicdevice

Realization of more accurate precision dockingcontrol and smooth intervening operationby driver. Compatibility with active safety, trafficjam assist control, automated driving.

Redundant ECU / motor hardware. Avoidance ofabrupt stop of precision docking control due tosteering factors.

JTEKT Solutions