Standard No.:	GB 15742-2001
English Name:	Performance requerements and test methods of horn for motor vehicles
Chinese Name:	机动车用喇叭的性能要求及试验方法
Chinese Classification:	T36    Electronic and electrical equipment
Professional Classification:	GB    National Standard
ICS Classification:	43.040.10 43.040.10    Electrical and electronic equipment 43.040.10
Issued by:	State Quality and Technology Supervision Bureau
Issued on:	2001-01-01
Implemented on:	2001-10-1
Status:	superseded
Superseded by:	GB 15742-2019 Performance requirements and test methods of horn for motor vehicles
Superseded on:	2020-1-1
Superseding:	GB 15742-1995 Automotive --electric horn --performance requirements and test methods QC/T 67-1993 Measurement method for motorcycle horn sound level
Language:	English
File Format:	PDF
Word Count:	2000 words
Price(USD):	40.0
Delivery:	via email in 1 business day

1 Scope This Standard specifies performance requirements and test methods of direct current and compressed-air driven horns for motor vehicles, as well as horns installed in motor vehicles. This Standard is applicable to motor vehicles of categories M, N, L3, L4 and L5. 2 Normative References The provisions of the following standard, through reference into this Standard, constitute provisions of this Standard. When this Standard is published, the editions indicated are valid. All standards are subject to revision, and Parties concerned are encouraged to discuss the possibility of applying the latest edition(s) of the following standard(s). IEC 651-1979 Sound Level Meters IEC 225-1966 1/1, 1/2 and 1/3 Octave Filters for the Analysis of Sound and Vibration 3 Performance Requirements and Test Methods 3.1 Performance Requirement 3.1.1 General The electric horn shall emit a continuous and uniform sound. For pneumatic and electro-pneumatic horns, the time lapse between the moment when the horn is actuated and the moment when the sound-pressure level prescribed in 3.1.2 is reached shall not exceed 0.2 second (s).