Document ID: chunk:federal_register_of_legislation:F2018L01515:body:0:p6
Version: federal_register_of_legislation:F2018L01515
Segment Type: other
Provision Reference: 
Character Range: 17866–20868

in this Regulation, it means both the control transmission and the energy transmission. A distinction is drawn between mechanical, electrical and hydraulic transmission systems or combinations thereof, according to the means by which the signals and/or energy is transmitted.
2.3.2.1. "Control transmission" means all components by means of which signals are transmitted for control of the steering equipment.
2.3.2.2. "Energy transmission" means all components by means of which the energy required for control/regulation of the steering function of the wheels is transmitted.
2.3.3. "Autonomous Steering System" means a system that incorporates a function within a complex electronic control system that causes the vehicle to follow a defined path or to alter its path in response to signals initiated and transmitted from off-board the vehicle. The driver will not necessarily be in primary control of the vehicle.
2.3.4. "Advanced Driver Assistance Steering System" means a system, additional to the main steering system, that provides assistance to the driver in steering the vehicle but in which the driver remains at all times in primary control of the vehicle. It comprises one or both of the following functions:
2.3.4.1. "Automatically commanded steering function (ACSF)" means a function within an electronic control system where actuation of the steering system can result from automatic evaluation of signals initiated on-board the vehicle, possibly in conjunction with passive infrastructure features, to generate control action in order to assist the driver.
2.3.4.1.1. "ACSF of Category A" means a function that operates at a speed no greater than 10 km/h to assist the driver, on demand, in low speed or parking manoeuvring.
2.3.4.1.2. "ACSF of Category B1" means a function which assists the driver in keeping the vehicle within the chosen lane, by influencing the lateral movement of the vehicle.
2.3.4.1.3. "ACSF of Category B2" means a function which is initiated/activated by the driver and which keeps the vehicle within its lane by influencing the lateral movement of the vehicle for extended periods without further driver command/confirmation
2.3.4.1.4. "ACSF of Category C" means, a function which is initiated/activated by the driver and which can perform a single lateral manoeuvre (e.g. lane change) when commanded by the driver.
2.3.4.1.5. "ACSF of Category D" means a function which is initiated/activated by the driver and which can indicate the possibility of a single lateral manoeuvre (e.g. lane change) but performs that function only following a confirmation by the driver.
2.3.4.1.6. "ACSF of Category E" means a function which is initiated/activated by the driver and which can continuously determine the possibility of a manoeuvre (e.g. lane change) and complete these manoeuvres for extended periods without further driver command/confirmation.
2.3.4.2. "Corrective Steering Function (CSF)" means a control function within an electronic control system whereby,