GB/T 26773-2011 PDF EnglishUS$145.00 · In stock · Download in 9 seconds
GB/T 26773-2011: Intelligent transport systems -- Lane departure warning systems -- Performance requirements and test procedures Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 26773-2011: Intelligent transport systems -- Lane departure warning systems -- Performance requirements and test procedures---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT26773-2011 NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 03.220.20; 35.240.60 R 87 Intelligent transport systems - Lane departure warning systems - Performance requirements and test procedures [ISO 17361.2007(E), NEQ] Issued on. JULY 20, 2011 Implemented on. DECEMBER 01, 2011 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the PRC; Standardization Administration of the PRC. Table of ContentsForeword... 3 Introduction... 4 1 Scope... 5 2 Normative references... 5 3 Terms and definitions... 5 4 Technical requirements... 10 5 Test procedures... 14ForewordThis Standard corresponds to ISO 17361.2007(E) “Intelligent transport systems - Lane departure warning systems - Performance requirements and test procedures” (English edition). The degree of consistency with ISO 17361.2007(E) is non-equivalent. This Standard was proposed by and shall be under the jurisdiction of National Technical Committee 268 on Intelligent Transport Systems of Standardization Administration of China (SAC/TC 268). Drafting organizations of this Standard. Research Institute of Highway Ministry of Transport, Wuhan University of Technology. Main drafters of this Standard. Li Bin, Zhao Li, Zou Ying, Qi Tongyan, Yang Qi, Wu Tao, Wang Lin, Wu Chaozhong, Song Fei, Ying Shijie.1 ScopeThis Standard specifies the definitions, classification, functions, human- machine interface (HMI), and test procedures, etc. of lane departure warning systems. This Standard applies to passenger cars and commercial vehicles. It is not applicable to warnings on road sections with temporary or irregular lane markings (such as road construction areas).2 Normative referencesThe following documents contain provisions which, through reference in this Standard, constitute provisions of this Standard. For the dated references, their subsequent amendments (excluding corrections) or revisions do not apply to this Standard. However, the parties who enter into agreement based on this Standard are encouraged to investigate whether the latest editions of these documents are applicable. For undated reference documents, the latest editions apply to this Standard. GB/T 3730.2-1996 Road vehicle - Masses - Vocabulary and codes (ISO 1176.1990, IDT) GB 5768 Road traffic signs and markings3 Terms and definitionsThe terms and definitions established in GB/T 3730.2-1996 and the following apply to this Standard. 3.1 Lane The driving zone without any fixed obstacles where the driver does not need to change the driving path. 3.2 Visible lane marking Markings placed on the lane boundary which can be directly seen by the driver during driving (e.g. not covered by snow, etc.). 3.3 Incidental visible road feature A visible road feature on the road surface which is not used to accurately describe the lane boundary line, but to indicate the lane position. 3.4 Lane boundary A lane boundary line determined by visible lane markings; or determined by other incidental visible road features or by other means such as GPS, magnetic markers, etc. in the absence of visible lane markings. See Figure 1 and Figure 2. 3.5 Default lane width The width which is preset for the lane when there is a visible lane marking on only one side of the lane and the system does not detect other lane boundaries. 3.6 Departure The condition in which the outer edge of one of the front wheels of the vehicle or the tractor of articulated vehicle is crossing the designated marking.4 Technical requirements4.1 System functions The functional composition of lane departure warning systems is illustrated in Figure 3.Where suppression request, vehicle speed measurement, driver 4.2 System classification The classification of lane departure warning systems is shown in Table 1.The system shall warn at least under one of the curve curvature conditions. 4.3 System requirements 4.3.1 Basic requirements The lane departure warning systems shall have at least the following functions. 4.3.2 Operational requirements 4.3.2.1 When meeting the warning condition, the system shall automatically send a warning to alert the driver. 4.3.2.2 The latest warning line of passenger car is located at 0.3 m outside the lane boundary. The latest warning line of commercial vehicle is located at 1 m outside the lane boundary. 4.3.3 Human-machine interaction requirements 4.3.3.1 Warning form The system shall provide a haptic and (or) audible warning which is easily perceived. 4.3.3.2 Conflict with other warnings If the vehicle is equipped with other warning systems such as the vehicle front collision warning system (FVCWS), the lane departure warning system (LDWS) shall, by haptics, hearing, or vision, or a combination, provide the driver with a clearly identifiable warning. 4.3.4 Optional functions 4.3.4.1 The system may be equipped with an on/off device for the driver to operate at any time. Rate of departure Maximum distance within the lane boundary The TTLC is multiplied by the rate of departure. See 3.9. 4.3.4.2 The system may detect the suppression request signal, to minimize unnecessary warnings. For example, when the driver is performing steering, braking, or other higher-priority operations such as collision avoidance operation, the system suppression request is in effect. 4.3.4.3 When the warning is suppressed, the system may notify the driver. 4.3.4.9 The system may suppress additional warnings, to avoid annoying the driver due to excessive warning information.5 Test procedures5.1 Test environmental conditions It shall use the following test environmental conditions. 5.2 Test lane conditions The radius of curvature of the test lane shall be within ±10% of the minimum radius of curvature of the corresponding type in Table 1.The test lane shall be of sufficient length, to meet the needs of the minimum operating speed (i.e. Type I 17 m/s, Type II 20 m/s), so that the vehicle can, at a rate of departure of 0 m/s< v≤0.8 m/s, leave the lane. 5.3 Test vehicle conditions The mass of the test vehicle shall be BETWEEN the total of complete vehicle kerb mass plus the mass of driver and test equipment (The total mass of the driver and test equipment does not exceed 150 kg) AND the maximum allowable total mass. 5.4 Installation and setup of test system Installation and setup of lane departure warning systems shall be performed in accordance with the equipment instructions provided by the manufacturer. For the test of lane departure warning systems with user-adjustable warning threshold, it shall perform each test twice; that is, the warning threshold is set at the earliest warning line once and set at the latest warning line once. After the start of the test, it is not allowed to change the system setup. 5.5 Test procedures 5.5.2 Procedures 5.5.2.1 It shall complete the following three tests. 5.5.2.2 Warning generation test At the beginning of the test, the vehicle shall be basically in the center of the lane. 5.5.2.3 Repeatability test The repeatability test shall be performed on a straight road section. The driving speed of vehicle is selected according to the system classification in Table 1. For Type I systems, it shall select 20 m/s~22 m/s. 5.6 Standards for passing tests 5.6.1 Warning generation test In each test, the system shall ensure that the vehicle issues a warning before it has crossed the latest warning line after crossing the earliest warning line. 5.6.2 Repeatability test For each test group, the system’s warning threshold shall always be in a fixed zone of 0.3 m wide. 5.6.3 False alarm test When the vehicle is located between the left and right earliest warning lines (i.e. no warning zone), the system shall not issue a warning. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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