乘用车后方交通穿行提示系统 性能要求及试验方法 Performance requirements and testing methods for rear cross traffic alert system of passenger cars  ICS  43.040 CCS  T 40   中华人民共和国国家标准 GB/T 44156—2024 2024-06-2 9发布 2024-06-2 9实施     国家市场监督管理总局 国家标准化管理委员会 发 布目　　次 前言   ·····································································································   Ⅲ 1     范围   ··································································································   1 2     规范性引用文件   ······················································································   1 3     术语和定义   ···························································································   1 4     一般要求   ······························································································   2      4.1     功能要求   ·························································································   2      4.2     自检要求   ·························································································   2      4.3     状态提示要求   ····················································································   3      4.4     电磁兼容要求   ····················································································   3 5     性能要求   ······························································································   3      5.1     碰撞提示形式要求   ···············································································   3      5.2     碰撞提示条件要求   ···············································································   3 6     试验方法   ······························································································   3      6.1     试验环境条件   ····················································································   3      6.2     试验设备   ·························································································   3      6.3     测量系统   ·························································································   4      6.4     机动车穿行试验   ·················································································   4      6.5     两轮车穿行试验   ·················································································   5      6.6     行人穿行试验   ····················································································   6 GB/T 44156—2024     Ⅰ 前　　言 本文件按照GB/T 1.1—2020《标准化工作导则　第1部分：标准化文件的结构和起草规则》的规 定起草。 请注意本文件的某些内容可能涉及专利。本文件的发布机构不承担识别专利的责任。 本文件由中华人民共和国工业和信息化部提出。 本文件由全国汽车标准化技术委员会（SAC/TC 114）归口。 本文件起草单位：中国第一汽车集团有限公司、中国汽车技术研究中心有限公司、上海机动车检测 认证技术研究中心有限公司、吉利汽车研究院（宁波）有限公司、上汽大众汽车有限公司、东风汽车有 限公司东风日产乘用车公司、东软睿驰汽车技术（沈阳）有限公司、上海海拉电子有限公司、沃尔沃汽 车（亚太）投资控股有限公司、北京汽车股份有限公司、广州汽车集团股份有限公司、襄阳达安汽车检 测中心有限公司、博世汽车部件（苏州）有限公司、浙江万安科技股份有限公司。 本文件主要起草人：刘斌、孙航、吴杭哲、张行、曹建永、李国庆、吴羽熙、邹永锋、张春民、 沈时钊、夏敬初、奚瑞轩、张云霞、费音、肖连飞、伍永会、黄画宇、苏芮琦、唐松坡、陈锋。   GB/T 44156—2024     Ⅲ 乘用车后方交通穿行提示系统 性能要求及试验方法 1　范围   本文件规定了乘用车后方交通穿行提示系统的性能要求，描述了相应的试验方法。 本文件适用于安装有后方交通穿行提示系统的M1类车辆。 注：在不引起混淆的情况下，本文件中的“后方交通穿行提示系统”简称“RCTA系统”。 2　规范性引用文件   下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中，注日期的引用文 件，仅该日期对应的版本适用于本文件；不注日期的引用文件，其最新版本（包括所有的修改单）适用 于本文件。 GB 34660　道路车辆　电磁兼容性要求和试验方法 GB/T 39263　道路车辆　先进驾驶辅助系统（ADAS）　术语及定义 3　术语和定义   GB/T 39263界定的以及下列术语和定义适用于本文件。 3.1　 后方交通穿行提示系统　rear cross traffic alert system 在车辆倒车时，实时监测车辆后方横向接近的其他道路使用者，并在可能发生碰撞危险时发出警告 信息的系统。 3.2　 试验车辆　subject vehicle 装配有RCTA系统及试验设备的被测车辆。 3.3　 两轮车　bicycle 两个车轮的自行车。 3.4　 目标　target 在车辆后方横向接近的机动车、两轮车和行人。 3.4.1　 目标车辆　target vehicle 在车辆后方横向接近的机动车。 3.4.2　 目标两轮车　target bicycle 在车辆后方横向接近的两轮车。 3.4.3　 目标行人　target pedestrian 在车辆后方横向接近的行人。 GB/T 44156—2024     1 3.5　 遮挡车辆　blocking vehicle 在试验车辆相邻车位，与试验车辆平行停放的车辆。 3.6　 横向距离　lateral distance 在试验车辆坐标系下，试验车辆临近目标的车身侧向最外缘（除外后视镜）与目标前端最外缘（目 标为行人时，为行人质心）之间在垂直于试验车辆行驶方向上的投影距离。 注：目标与试验车辆的横向距离见图1。 标引序号说明： 1  ─ 试验车辆； 2  ─ 目标车辆； 3  ─ 遮挡车辆； 4  ─ 目标两轮车； 5  ─ 目标行人； L1─ 横向距离。 图1　目标与试验车辆的横向距离 3.7　 预碰撞时间　time to collision；TTC 同一时刻下横向距离与在横向距离投影上相对速度的比值。 3.8　 自检　self-check 系统对自身故障进行检查的功能。 4　一般要求  4.1　功能要求   RCTA系统按照最小识别目标可分成Ⅰ型、Ⅱ型两种类型，分别应满足以下要求： Ⅰ型RCTA系统