GB24545-2019
Requirements and test methods of speed limitation system for motor vehicles
车辆车速限制系统技术要求及试验方法
GB 24545-2019 is a current mandatory Chinese national standard for Requirements and test methods of speed limitation system for motor vehicles. It appears in the Electronics compliance cluster with a product safety focus and has an implementation date of Jul 1, 2020.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to maximum speed limitation devices and adjustable speed limitation devices, as well as Category M and N vehicles equipped with these devices or featuring these functions. It is mandatory for all relevant manufacturers. It does not apply to vehicles without speed limitation systems.
Technical requirements
The standard specifies environmental, electrical, mechanical, climatic, and chemical load requirements for speed limitation systems, referencing standards like GB/T 28046. It also mandates electromagnetic radiation immunity and electrical transient conduction performance. Manufacturers must ensure system failure does not affect the driver's ability to control the engine via the accelerator pedal. Specific set speed limits are defined for certain vehicle types. For instance, highway buses, tourist buses, and motor caravans have a maximum set speed, while dangerous goods transport vehicles and special school buses have a lower limit. For maximum speed limitation systems, the system must prevent unauthorized adjustment or power interruption. It is prohibited to achieve speed limitation through service braking. Visual and auditory warning signals are required when the vehicle exceeds the set speed. For adjustable speed limitation systems, the system must display the adjustable limit speed (vadj_) and provide an alarm when exceeded. The driver can set the speed within specific step increments, and the function must automatically cancel when the engine is turned off.
Testing methods
The standard outlines testing procedures for both maximum and adjustable speed limitation systems. Tests can be conducted via road tests or dynamometer tests. Key evaluations include acceleration tests to verify stabilized speed and steady speed tests to ensure the system maintains the limit under full throttle. For adjustable systems, overspeed alarm tests and specific speed limitation tests are required.
FAQs
What products are regulated under GB 24545-2019?
It regulates speed limitation systems and Category M and N vehicles equipped with them.
Is GB 24545-2019 mandatory?
Yes, all technical content in this standard is mandatory.
Are there specific implementation dates for different requirements?
Yes, most requirements apply from the implementation date, but the speed limitation signal mark has a delayed implementation for new and existing type approvals.
The summary above provides a high-level overview of GB 24545-2019. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 24545-2019 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Product
- CCS
- T26
- ICS
- 43.040.30
- Competent department
- Ministry of Industry and Information Technology
- Technical committee
- Ministry of Industry and Information Technology
Relationships
Replaces:GB/T 24545-2009