Gjuha shqipe
Print page     Create PDF

The Working Party on Braking and Running Gear (GRRF) is the subsidiary body of the World Forum for Harmonization of Vehicle Regulations (WP.29) that prepares regulatory proposals on active safety, specifically on braking and running matters, to WP.29.  This group of experts conducts research and analysis to develop active safety requirements of vehicles.

GRRF convenes officially twice a year and entrusts informal groups with specific problems that need to be solved urgently or that require special expertise.  More than 90 experts participate at the sessions of GRRF.

The Working Party is open to the governmental experts from any member country of the United Nations, and to any regional economic integration organization set up by member countries of the United Nations, and to experts of governmental organizations. Experts of non-governmental organizations (NGOs) may participate in a consultative capacity.  Final decisions are taken by Government representatives by vote at the World Forum (WP.29) level.

The work of GRRF experts is transparent: all agendas, working documents and reports are openly accessible on this Internet website.


Last achievements:

UNECE’s World Forum for Harmonization of Vehicle Regulation (WP.29) adopted 2 new regulations that will enter into force in mid-2013 (i.e. 6 months after adoption) which were developed by GRRF within the last years:

Lane Departure Warning System (LDWS)

This system, fitted to trucks and coaches, is warning the driver, through an optical, acoustic or haptic warning, of an unintentional departure of his vehicle out of the travel lane. It thus aims at minimizing accidents by addressing three main causes of collisions: driver errors, distractions and drowsiness.

Advanced Emergency Braking System (AEBS)

The system, fitted to trucks and coaches, is using sensors to monitor the proximity of an object or a vehicle in front and detect situations where the relative speed and distance between the two vehicles suggests a collision will take place. The system provides the driver with a warning and activates the vehicle braking system to decelerate the vehicle with the purpose of avoiding or mitigating the severity of a collision in the event that the driver does not respond to the warning.  

Here a video made at the occasion of a demonstration organized in Geneva in May 2011 prior to a special session of GRRF, introducing the system.



© United Nations Economic Commissions for Europe – 2013