Working Party on Automated and Connected Vehicles | Session 16 | 22-26 May 2023
Geneva

Deadline for submission of formal working documents: 27 February 2023.

Agenda Item 11.
Exchange of views on guidelines and relevant national activities

126. The expert from Norway presented GRVA-16-25, informing GRVA on safety recommendations from the Norwegian Safety Investigation Authority (NSIA) on vehicle stability systems and tyre explosion. He stated that it was identified that the scope of damage could be reduced by introducing technical solutions or driver support systems that enable drivers of heavy vehicles to make a controlled stop if the steering tyre on the front axle explodes. He inquired whether functions like Electronic Stability Control, Emergency Steering Function, Minimum Risk Manoeuvre or Emergency Manoeuvre could support vehicle stability after tire explosion.

127. The expert from OICA explained that the functions mentioned above were not specifically designed to react in such dramatic situations and that they were relying on working system. He recalled that these functions were aiming at either to correct mistakes by the driver, who may had entered to fast in a curve, or to avoid collisions with other vehicles.

128. The expert from France stated that further tests would be needed to determine if new systems (taking into account tyre bursting) would help the driver in such a case. He inquired for additional information on the causes of the tyre bursting.

129. The expert from CLEPA confirmed that exploding tyres are tested. He confirmed some requirements for buses and coaches regarding brakes and ABS. He agreed to check if Electronic Stability Control and ADAS could help in such circumstances and report at the next session.

Documentation
GRVA-16-25 Vehicle stability systems and tyre explosion (NSIA)