ISO 22733-1-2021 pdf free download – Road vehicles — Test method to evaluate the performance of autonomous emergency braking systems — Part 1: Car-to-car.
This document specifies a method to evaluate the behaviour of a vehicle equipped with an autonomousemergency braking system(AEBS), or dynamic brake support (DBS) during several accident scenarios.Those accidents occur during a straight-line driving when the vehicle under test (VUT) approachesanother vehicle in the same lane.Both vehicles are aligned in longitudinal axis to each other.
The most important part of the vehicle behaviour during these accidents scenarios is the capacity toavoid or mitigate the collision.
Systems requiring driver intervention are not in the scope of this document.
NOTE Depending on accidentology, only a part of the scenarios can be used for an evaluation of performance.AEB system evaluation based upon this document is limited to longitudinal accident scenarios.
2Normative references
The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document.For dated references, only the edition cited applies.Forundated references, the latest edition of the referenced document (including any amendments) applies.ISO 8855:2011, Road vehicles — Vehicle dynamics and road-holding ability —Vocabulary
ISO 15037-1:2019,Road vehicles – Vehicle dynamics test methods — Part 1:General conditions forpassenger cars
ISO 19206-1, Road vehicles —Test devices for target vehicles, vulnerable road users and other objects, forassessment of active safety functions —Part 1: Requirements for passenger vehicle rear-end targets
3Terms and definitions
For the purposes of this document, the terms and definitions given in IS0 8855, ISO 15037-1 and thefollowing apply.
lSo and IEC maintain terminological databases for use in standardization at the following addresses:-ISO online browsing platform: available at https://www .org/obp
—IEC Electropedia: available at https://www.electropedia.org/
3.1 AEB
autonomous emergency braking
braking applied automatically by the vehicle in response to the detection of a likely collision to reducethe vehicle speed and potentially avoid the collisioni
3.2 CCRs
car-to-car rear stationary
collision in which a vehicle travels forward towards another stationary vehicle and the frontalstructureof the vehicle strikes the rear structure of the stationary vehicle
3.3 CCRm
car-to-car rear moving
collision in which a vehicle travels forward towards another vehicle travelling at constant speed andthe frontal structure of the vehicle strikes the rear structure of the leading vehicle
3.4 CCRb
car-to-car rear braking
collision in which a vehicle travels forward towards another vehicle travelling at constant speed andthen decelerates, and the frontal structure of the vehicle strikes the rear structure of the leading vehicle
3.5 DBS
dynamic brake support
system that further amplifies the driver braking demand in response to the detection of a likely collisionto achieve a greater deceleration
3.6 EVT
equivalent vehicle target
vehicle target as defined in ISO 19206-1
3.7 Fcw
forward collision warning
audiovisual warning provided automatically by the vehicle in response to the detection of a likelycollision to alert the driver
3.8 peak braking coefficientPBC
measure of tyre-to-road surface friction based on the maximum deceleration of a rolling tyreNote 1 to entry: Measured using ASTM E1136-10, at a speed of 64,4 km/h, without water delivery.
3.9 TTC
time-to-collision
remaining time before the vuT strikes the EVT (3.6), assuming that the VUT and EVT travel at constantspeed
3.10 vUT
vehicle under test
vehicle tested with a pre-crash collision mitigation or avoidance system on board
3.11 TAEB.
time when the AEB([3.1) system activates
Note 1 to entry: Activation time is determined by identifying the last data point where the filtered accelerationsignal is below-1 m/s2 , and then going back: to the point in time where the acceleration first crossed -0),3 m/s2.ISO 22733-1 pdf download.