Terminology

component of subject vehicle’s approach velocity at a right angle to the lane boundary

component of subject vehicle’s approach velocity at a right angle to the lane boundary

Application Area: Vehicle/roadway warning and control systems
Associated Standards: ISO 11270
Terminology

distance travelled by a vehicle from the time the driver judged what action to take until the time the brake is applied after having been notified of a traffic impediment

distance travelled by a vehicle from the time the driver judged what action to take until the time the brake is applied after having been notified of a traffic impediment

Application Area: Vehicle/roadway warning and control systems
Associated Standards: ISO TS 15624
Terminology

indication presented to the driver that the ERBA system has completed its state transition from OFF (or standby) to ON and is now ready for operational use
NOTE: The method of presentation of this indication may be visual or audible or any combination so desired by the system designer.

indication presented to the driver that the ERBA system has completed its state transition from OFF (or standby) to ON and is now ready for operational use
NOTE: The method of presentation of this indication may be visual or audible or any combination so desired by the system designer.

Application Area: Vehicle/roadway warning and control systems
Associated Standards: ISO 22840
Terminology

the rear clearance of a target vehicle is defined as the distance between the rear of the subject vehicle and the front of the target vehicle as measured along a straight line, or optionally, as estimated along the target vehicle’s estimated path
NOTE: This definition applies to target vehicles in the rear zones only.

the rear clearance of a target vehicle is defined as the distance between the rear of the subject vehicle and the front of the target vehicle as measured along a straight line, or optionally, as estimated along the target vehicle’s estimated path
NOTE: This definition applies to target vehicles in the rear zones only.

Application Area: Vehicle/roadway warning and control systems
Associated Standards: ISO 17387
Terminology

the rear zones are the zones which are behind and to the sides of the subject vehicle
NOTE: The rear zones are intended to cover the lanes adjacent to the subject vehicle. However, the position and size of the rear zones are defined with respect to the subject vehicle, and are independent of any lane markings.

the rear zones are the zones which are behind and to the sides of the subject vehicle
NOTE: The rear zones are intended to cover the lanes adjacent to the subject vehicle. However, the position and size of the rear zones are defined with respect to the subject vehicle, and are independent of any lane markings.

Application Area: Vehicle/roadway warning and control systems
Associated Standards: ISO 17387
Terminology

forward vehicle collision in which the front of the subject vehicle strikes the rear of the forward vehicle

forward vehicle collision in which the front of the subject vehicle strikes the rear of the forward vehicle

Application Area: Vehicle/roadway warning and control systems
Strukturální kategorie: Data and Processes > Processes, Phenomena and Events
Associated Standards: ISO 22839
Terminology

optical radar reflectivity of the target, which is defined as the radiated intensity towards the receiver (Iref – W/sr) measured at target level, immediately after the reflection; divided by the intensity of irradiation received from the transmitter (Et – W/m2) measured at target level, immediately before the reflection
NOTE 1 to entry: The units for RCTT value are in m2/sr.

optical radar reflectivity of the target, which is defined as the radiated intensity towards the receiver (Iref – W/sr) measured at target level, immediately after the reflection; divided by the intensity of irradiation received from the transmitter (Et – W/m2) measured at target level, immediately before the reflection
NOTE 1 to entry: The units for RCTT value are in m2/sr.

Application Area: Vehicle/roadway warning and control systems
Associated Standards: ISO 15623
Terminology

area where PVOI and TV may exist and affect CACC system control operations

area where PVOI and TV may exist and affect CACC system control operations

Application Area: Vehicle/roadway warning and control systems
Strukturální kategorie: Fundamental Concepts and Foundations > Prostředí kolem ITS
Terminology

difference between the longitudinal velocities of the subject vehicle (SV) and the target vehicle (TV), vr(t), given by the equation; equivalently the rate of change with respect to time of the distance between the two vehicles
NOTE: A positive value of relative velocity indicates that the target vehicle is moving faster than the subject vehicle, and that the distance between them is…

difference between the longitudinal velocities of the subject vehicle (SV) and the target vehicle (TV), vr(t), given by the equation; equivalently the rate of change with respect to time of the distance between the two vehicles
NOTE: A positive value of relative velocity indicates that the target vehicle is moving faster than the subject vehicle, and that the distance between them is increasing with time vr(t)= vTV(t)-vSV(t).

Application Area: Vehicle/roadway warning and control systems
Strukturální kategorie: Data and Processes > Quantities
Associated Standards: ISO 15623
Terminology

driver that performs the dynamic driving task without using the vehicle's built- in input devices to control the longitudinal and lateral movement of the vehicle
NOTE 1 to entry: A remote driver can use a variety of physical input devices, but none that are built into the vehicle.

driver that performs the dynamic driving task without using the vehicle's built- in input devices to control the longitudinal and lateral movement of the vehicle
NOTE 1 to entry: A remote driver can use a variety of physical input devices, but none that are built into the vehicle.

Application Area: Vehicle/roadway warning and control systems
Strukturální kategorie: Fundamental Concepts and Foundations > Actors, Entities and Roles
Terminology

input device designed to be electronically connected to a vehicle even when the vehicle is not in close proximity

input device designed to be electronically connected to a vehicle even when the vehicle is not in close proximity

Application Area: Vehicle/roadway warning and control systems
Terminology

the minimum deceleration that, if constant, would enable the subject vehicle to match the path velocity of the target vehicle without contacting the target vehicle and thus prevent a collision
NOTE: Consideration of the target vehicle deceleration DTV is optional. When not used, it shall take a value of zero.

the minimum deceleration that, if constant, would enable the subject vehicle to match the path velocity of the target vehicle without contacting the target vehicle and thus prevent a collision
NOTE: Consideration of the target vehicle deceleration DTV is optional. When not used, it shall take a value of zero.

Application Area: Vehicle/roadway warning and control systems
Associated Standards: ISO 22839
Terminology

system that gives an indication to the driver, when the reverse gear is selected, whether there are objects in the monitoring range

system that gives an indication to the driver, when the reverse gear is selected, whether there are objects in the monitoring range

Application Area: Vehicle/roadway warning and control systems
Associated Standards: ISO 17386
Terminology

points that is composing roads in digital map
NOTE 1 to entry: Roads are composed of points and links which reflect the shape and position of the road in the digital map.

points that is composing roads in digital map
NOTE 1 to entry: Roads are composed of points and links which reflect the shape and position of the road in the digital map.

Application Area: Vehicle/roadway warning and control systems
Strukturální kategorie: Fundamental Concepts and Foundations > Prostředí kolem ITS
Terminology

equipment located along the road ether fixed or mobile

equipment located along the road ether fixed or mobile

Application Area: Freight, Logistics and Commercial Vehicle Operations, Vehicle/roadway warning and control systems
Strukturální kategorie: Components (HW/SW) > End-User ITS Device Components
Associated Standards: ISO 26684, ISO 15638-20
Terminology

the roadway radius of curvature is the horizontal radius of curvature of the road on which the subject vehicle is travelling

the roadway radius of curvature is the horizontal radius of curvature of the road on which the subject vehicle is travelling

Application Area: Vehicle/roadway warning and control systems
Strukturální kategorie: Data and Processes > Quantities
Terminology

minimum area in which APS is able to search the environment for suitable parking slots

minimum area in which APS is able to search the environment for suitable parking slots

Application Area: Vehicle/roadway warning and control systems
Strukturální kategorie: ITS Systems, Services, Functions and Applications > Control, Safety and Automation Services
Terminology

component that detects objects in the monitoring range
NOTE: There are a variety of sensor principles listed below which could be used. The most common principle is the flight time measurement (e.g. radar, lidar, sonar). Active sensor elements create a pulsed or continuously modulated field of microwaves, (infrared) light, or ultrasonic sound. The reflected energy due to an object in the…

component that detects objects in the monitoring range
NOTE: There are a variety of sensor principles listed below which could be used. The most common principle is the flight time measurement (e.g. radar, lidar, sonar). Active sensor elements create a pulsed or continuously modulated field of microwaves, (infrared) light, or ultrasonic sound. The reflected energy due to an object in the detection area is received, and the distance to the object is measured. The lateral position of the object is estimated based on the beam or field directional characteristics, or based on the timing relationships between sensors with overlapping coverage areas. Alternative principles include distance measurement by triangulation principle and passive sensor systems using image processing.

Application Area: Vehicle/roadway warning and control systems
Associated Standards: ISO 17386, ISO 15638-22, ISO 15638-21
Terminology

component or set of components which detects objects in the monitoring range

component or set of components which detects objects in the monitoring range

Application Area: Vehicle/roadway warning and control systems
Terminology

desired travel speed, set either by the driver or by some control system that is external to the ACC system
NOTE 1 to entry: The set speed is the maximum desired speed of the vehicle while under ACC control.

desired travel speed, set either by the driver or by some control system that is external to the ACC system
NOTE 1 to entry: The set speed is the maximum desired speed of the vehicle while under ACC control.

Application Area: Vehicle/roadway warning and control systems
Associated Standards: ISO 15622
Terminology

simple curved road with a constant radius of curvature separated from other curved roads
NOTE 1 to entry: The clothoid can be included.

simple curved road with a constant radius of curvature separated from other curved roads
NOTE 1 to entry: The clothoid can be included.

Application Area: Vehicle/roadway warning and control systems
Strukturální kategorie: Fundamental Concepts and Foundations > Prostředí kolem ITS
Terminology

operation mode in which the APS searches the environment for suitable parking slots

operation mode in which the APS searches the environment for suitable parking slots

Application Area: Vehicle/roadway warning and control systems
Terminology

object in front of the subject vehicle that is moving at less than MAX [1,0 m/s, 10 % of the subject vehicle speed] in the direction of the centreline of the subject vehicle

object in front of the subject vehicle that is moving at less than MAX [1,0 m/s, 10 % of the subject vehicle speed] in the direction of the centreline of the subject vehicle

Application Area: Vehicle/roadway warning and control systems
Associated Standards: ISO 22178, ISO 22179
Terminology

vehicle travelling at or below “A” km/h within a traffic flow
NOTE: The value for “A” is to be determined according to the road configuration and speed limit.

vehicle travelling at or below “A” km/h within a traffic flow
NOTE: The value for “A” is to be determined according to the road configuration and speed limit.

Application Area: Vehicle/roadway warning and control systems
Associated Standards: ISO TS 15624
Terminology

SRB FVCMS countermeasure that reduces the subject vehicle speed by activating the brakes allowing the driver time to analyse and respond to a potential collision, which may have the additional effect of drawing driver attention to hazards ahead of the subject vehicle (SV)

SRB FVCMS countermeasure that reduces the subject vehicle speed by activating the brakes allowing the driver time to analyse and respond to a potential collision, which may have the additional effect of drawing driver attention to hazards ahead of the subject vehicle (SV)

Application Area: Vehicle/roadway warning and control systems
Associated Standards: ISO 22839
Terminology

object in front of the subject vehicle which is stationary

object in front of the subject vehicle which is stationary

Application Area: Vehicle/roadway warning and control systems
Associated Standards: ISO 15622
Terminology

indication of system status
NOTE: Examples of status indication are on/off, failure and incapable.

indication of system status
NOTE: Examples of status indication are on/off, failure and incapable.

Application Area: Vehicle/roadway warning and control systems
Associated Standards: ISO 17361
Terminology

condition whereby the value of the described parameter does not change with respect to time, distance, etc.

condition whereby the value of the described parameter does not change with respect to time, distance, etc.

Application Area: Vehicle/roadway warning and control systems
Associated Standards: ISO 15622
Terminology

angle between the straight-ahead position and the current position (heading) of the wheels relative to the longitudinal axis of the vehicle

angle between the straight-ahead position and the current position (heading) of the wheels relative to the longitudinal axis of the vehicle

Application Area: Vehicle/roadway warning and control systems
Associated Standards: ISO 22840
Terminology

pavement marking line extending across approach lanes to indicate the point at which a stop is intended or required to be made

pavement marking line extending across approach lanes to indicate the point at which a stop is intended or required to be made

Application Area: Vehicle/roadway warning and control systems
Strukturální kategorie: Fundamental Concepts and Foundations > Prostředí kolem ITS
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