Special provision 668
ADR 2025 — special provision (SP) 668, Chapter 3.3.
Substances for the purpose of applying road markings and bitumen or similar products for the purpose of repairing cracks and crevices in existing road surfaces, carried at elevated temperature, are not subject to the requirements of ADR, provided that the following conditions are met: (a) They do not fulfil the criteria of any class other than Class 9; (b) The temperature of the outer surface of the boiler does not exceed 70 °C; (c) The boiler is closed in such a way that any loss of product is prevented during carriage; (d) The maximum capacity of the boiler is limited to 3 000 l.