Understanding R156

R156 is a United Nations regulation that governs the secure management of software updates in vehicles and trailers throughout their lifecycle. It requires manufacturers to implement a certified Software Update Management System (SUMS) to ensure updates are traceable, safe, and compliant with type approval standards.

As vehicles and trailers become increasingly digital, the risk of cyberattacks grows significantly. The R156 regulation ensures that all software updates are securely managed, traceable, and compliant, protecting safety, data integrity, and regulatory approval

SUMS (Software Update Management System) is Haldex’s secure platform designed to manage, document, and execute software updates for trailer braking systems in compliance with UN regulations R155 and R156. It ensures that updates are traceable, validated, and do not compromise vehicle type approval, offering peace of mind to OEMs and workshops.

Haldex develops and validates software updates for trailer braking systems, which are then reviewed and approved by OEMs before deployment. Each update is securely delivered and fully documented to ensure compliance with R156 and maintain type approval integrity.