On March 30, 2011, we learned from the site of the new standards development conference for GB7258 “Technical Conditions for Operational Safety of Motor Vehicles†held in Beijing. We discussed the resolution: trucks and dangerous goods transport vehicles with more than 12 tons will be forced to install slow speed. The device or other auxiliary braking device marks an important step towards the international standard for the safety of Chinese truck brakes.
According to on-site sources, the new standard of GB7258 will be formally promulgated at the end of 2011. For the braking system-retarder section, the national regulation will be implemented on the date of the formal promulgation of the regulations, with a transition period of 24 months, which will be fully implemented afterwards.
At the seminar site, representatives of truck companies expressed their agreement that the implementation of this provision will bring higher security to domestic trucks. Some companies had previously installed retarders, causing cost pressures or other truck companies. The fear of pulling brand influence was also solved by the enactment of the standard.
It is understood that European countries have already imposed mandatory retarders on passenger cars and trucks with more than 8 tons in the 1950s. And emphasize that EU members must comply with such regulations. However, this is only a low limit. Some countries have adopted more stringent national laws and regulations due to historical reasons and specific geographical conditions and road conditions.
The Ministry of Communications of the People's Republic of China was the JT/T325 “Classification and Rating of Operating Buses†promulgated in 1997. It was stipulated in 2002 that it must be installed on large-scale and medium-size high-level and high-level three-grade passenger highways. Although these regulations are later than foreign laws, they have played a positive role in the development of China's retarder industry and the safety of vehicles. In 2010, the revised version of 7.5 of GB7258-2010 focused on a new standard for auxiliary braking: passenger cars with a vehicle length of more than 9m, trucks with a total mass of more than 12000kg, and all dangerous goods vehicles should be equipped with retarders or other auxiliary brakes. Device. The performance requirements of the auxiliary braking device should comply with relevant regulations. The standard also provides new regulations for the installation of disc brakes on trucks.
The so-called vehicle retarder is a vehicle-assisted braking device. Its maximum function is to enhance the vehicle braking safety: the retarder can take about 30%-80% of the braking energy required for vehicle deceleration; Brake failure due to excessive brake temperature; or puncture due to excessive friction.
Retarder installation site
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