curved road

section where the radius of curvature is less than or equal to RC
NOTE 1 to entry: RC denotes the maximum radius of curvature to be regarded as a curvature point of interest for potential warning for CSWS.

section where the radius of curvature is less than or equal to RC
NOTE 1 to entry: RC denotes the maximum radius of curvature to be regarded as a curvature point of interest for potential warning for CSWS.

cut-in vehicle

forward adjacent vehicle that has a lateral component of motion towards the path of the subject vehicle

forward adjacent vehicle that has a lateral component of motion towards the path of the subject vehicle

cutting out

situation in which the target vehicle changes lanes from behind a preceding vehicle

situation in which the target vehicle changes lanes from behind a preceding vehicle

DDT performance-relevant system failure

malfunction in a vehicle system that prevents the driving automation system from reliably performing its portion of the DDT on a sustained basis
NOTE 1 to entry: The malfunction can be internal to the driving automation system or part of another vehicle system.

malfunction in a vehicle system that prevents the driving automation system from reliably performing its portion of the DDT on a sustained basis
NOTE 1 to entry: The malfunction can be internal to the driving automation system or part of another vehicle system.

default lane width

predetermined width given to a lane when a visible lane marking exists only on one side of the lane and no other lane boundaries are detected by the system

predetermined width given to a lane when a visible lane marking exists only on one side of the lane and no other lane boundaries are detected by the system

departure

the situation in which the outside of one of the front wheels of a vehicle or of the leading part of an articulated vehicle is crossing a specified line
NOTE: In the case of a 3-wheel vehicle, it is the same except that the wheel is one of the wheels on the axle with the widest track.

the situation in which the outside of one of the front wheels of a vehicle or of the leading part of an articulated vehicle is crossing a specified line
NOTE: In the case of a 3-wheel vehicle, it is the same except that the wheel is one of the wheels on the axle with the widest track.

distance indication

provides the driver information on the specific distance between the subject vehicle and the obstacle

provides the driver information on the specific distance between the subject vehicle and the obstacle

distance to curvature point of interest (S_current)

distance from the current position of the subject vehicle to the curvature point of interest

distance from the current position of the subject vehicle to the curvature point of interest

driver (Dr)

person that is currently responsible for the dynamic driving task for the vehicle
NOTE 1 to entry: The driver is typically on-board the vehicle but could be remote from the vehicle or automated logic.

person that is currently responsible for the dynamic driving task for the vehicle
NOTE 1 to entry: The driver is typically on-board the vehicle but could be remote from the vehicle or automated logic.

driver assistance request

unique interaction between driver and user interface which is required to enable the APS before each active parking manoeuvre

unique interaction between driver and user interface which is required to enable the APS before each active parking manoeuvre

driver response time (t_resp)

reaction time of the driver which is the time from start of the speed changing event to the time that the driver starts applying brake

reaction time of the driver which is the time from start of the speed changing event to the time that the driver starts applying brake

driver support system

driving automation system that is only able to perform part of the DDT
NOTE 1 to entry: Driver support systems include level 1 and level 2 driving automation.

driving automation system that is only able to perform part of the DDT
NOTE 1 to entry: Driver support systems include level 1 and level 2 driving automation.

driving automation system

hardware and software system that is able to perform part or all of the DDT on a sustained basis
NOTE 1 to entry: In contrast to this generic term for any level 1-5 system, the specific term for a level 3-5 system is “Automated Driving System (ADS).” Given the similarity between the generic term, “driving automation system,” and the level 3-5-specific term, “Automated Driving System,” the…

hardware and software system that is able to perform part or all of the DDT on a sustained basis
NOTE 1 to entry: In contrast to this generic term for any level 1-5 system, the specific term for a level 3-5 system is “Automated Driving System (ADS).” Given the similarity between the generic term, “driving automation system,” and the level 3-5-specific term, “Automated Driving System,” the latter term is intentionally capitalized when spelled out and reduced to its acronym, “ADS”, as much as possible, while “driving automation system” should not be.
NOTE 2 to entry: A driving automation system includes any system capable of level 1-5 driving automation.
NOTE 3 to entry: Driving automation levels are defined in ISO/SAE 22736, which is also known as SAE J3016.
NOTE 4 to entry: Driving automation levels include “level 1 driving automation”, “level 2 driving automation”, “level 3 ADS”, “level 4 ADS” and “level 5 ADS”.

driving manoeuvres

dual-mode vehicle; driving automation dual-mode vehicle

ADS-equipped vehicle designed for both driverless operation and operation by a conventional driver for complete trips

ADS-equipped vehicle designed for both driverless operation and operation by a conventional driver for complete trips

dynamic driving task (DDT)

all real-time operational and tactical functions required to operate a vehicle in on-road traffic
NOTE 1 to entry: The DDT includes lateral vehicle motion control, longitudinal vehicle motion control, monitoring the driving environment, object and event response execution, manoeuvre planning and enhancing conspicuity.
NOTE 2 to entry: The DDT excludes strategic functions such as trip…

all real-time operational and tactical functions required to operate a vehicle in on-road traffic
NOTE 1 to entry: The DDT includes lateral vehicle motion control, longitudinal vehicle motion control, monitoring the driving environment, object and event response execution, manoeuvre planning and enhancing conspicuity.
NOTE 2 to entry: The DDT excludes strategic functions such as trip scheduling and selection of destinations and waypoints.

dynamic warning

urgent indication to the driver of an imminent threat (collision) with an obstacle

urgent indication to the driver of an imminent threat (collision) with an obstacle

earliest warning line

innermost limit of the warning threshold

innermost limit of the warning threshold

element; architecture element

component member of an architecture model included in an architecture view

component member of an architecture model included in an architecture view

enhanced time to collision (ETTC)

time that it will take a subject vehicle to collide with the target vehicle assuming the relative acceleration between the subject vehicle (SV) and target vehicle (TV) remains constant

time that it will take a subject vehicle to collide with the target vehicle assuming the relative acceleration between the subject vehicle (SV) and target vehicle (TV) remains constant

extended range backing aid system (ERBA)

a system capable of warning a driver of the presence of obstacles in an area behind the vehicle and issuing a warning to indicate immediate driver action is required

a system capable of warning a driver of the presence of obstacles in an area behind the vehicle and issuing a warning to indicate immediate driver action is required

failure

is a mechanical or electronic malfunction which causes a persistent loss of performance or function
NOTE: Temporary performance reductions, e.g. due to bad weather conditions, bad lane markings or temporarily occurring sensor blindness are not a failure.

is a mechanical or electronic malfunction which causes a persistent loss of performance or function
NOTE: Temporary performance reductions, e.g. due to bad weather conditions, bad lane markings or temporarily occurring sensor blindness are not a failure.

fallback

response by a person to perform the DDT or by an ADS to achieve a minimal risk condition when the response is triggered upon violation of the defined operational design domain constraints or in response to a DDT performance-relevant driving automation system failure
NOTE 1 to entry: This term includes the response of a person to perform the DDT in a manner to quickly achieve a minimal risk…

response by a person to perform the DDT or by an ADS to achieve a minimal risk condition when the response is triggered upon violation of the defined operational design domain constraints or in response to a DDT performance-relevant driving automation system failure
NOTE 1 to entry: This term includes the response of a person to perform the DDT in a manner to quickly achieve a minimal risk condition.

fallback-ready user; DDT fallback-ready user (FRU)

person who is able to operate the vehicle if the Level 3 ADS issues a request to intervene or if that person otherwise identifies a condition that requires intervention to perform the DDT

person who is able to operate the vehicle if the Level 3 ADS issues a request to intervene or if that person otherwise identifies a condition that requires intervention to perform the DDT

false alarm

alarm that is issued when the warning conditions have not been fulfilled

alarm that is issued when the warning conditions have not been fulfilled

forward adjacent vehicle

vehicle not in the path of the subject vehicle (SV), and entirely ahead of a line touching the SV front bumper at only one point and perpendicular to the longitudinal axis of the SV

vehicle not in the path of the subject vehicle (SV), and entirely ahead of a line touching the SV front bumper at only one point and perpendicular to the longitudinal axis of the SV

forward ranging sensor

component which detects objects in at least part of the region entirely ahead of the front bumper

component which detects objects in at least part of the region entirely ahead of the front bumper

forward vehicle (FV)

vehicle in front of and moving in the same direction and travelling on the same roadway as the subject vehicle

vehicle in front of and moving in the same direction and travelling on the same roadway as the subject vehicle

forward vehicle collision

collision between the subject vehicle (SV) and a forward vehicle (FV)

collision between the subject vehicle (SV) and a forward vehicle (FV)

forward vehicle collision mitigation systems (FVCMS)

vehicle systems meeting the requirements of ISO 22839 that assess the likelihood of a collision between the front of the subject vehicle (SV) and the rear of a target vehicle (TV), and when such a collision is very likely, activates the brakes automatically to reduce the relative speed at which the SV and TV may collide

vehicle systems meeting the requirements of ISO 22839 that assess the likelihood of a collision between the front of the subject vehicle (SV) and the rear of a target vehicle (TV), and when such a collision is very likely, activates the brakes automatically to reduce the relative speed at which the SV and TV may collide