Proposal to adapt GTR No. 3 to technical and standardization progress, introducing provisions for the activation of the stop lamp under regenerative braking and to enable the use of the new American Society for Testing and Materials (ASTM) Standard Reference Test Tyre F2493 for the measurement of the Peak Braking Coefficient (PBC). This amendment aims to keep the global harmonization of motorcycle braking requirements in UN GTR No. 3 and the most recent version of UN Regulation No. 78.

Proposal introducing provisions for the activation of the stop lamp under regenerative braking and updating the references to ASTM standards to enable the use of the new ASTM standard reference test tyre F2493 for the measurement of the Peak Braking Coefficient (PBC).