Dangerous Goods by Road
tanks intended for the carriage of liquids having a vapour pressure of not more than 110 kpa (1.1 bar)
(absolute) at 50 oc shall have a breather device and a safety device to prevent the contents from
spilling out if the tank overturns; otherwise they shall conform to 6.8.2.2.7 or 6.8.2.2.8.