China 's transport ministry tightened existing rules governing how online ride-hailing firms should handle and share their data with regulators, a day after Didi Global was fined $1.2 billion for illegally collecting and processing data. The new measures are an update of similar rules announced in 2018 and give the government more control over data collected by these private companies. Data generated by ride-hailing platforms cannot be used for commercial purposes, must be stored for at least two years in China, compared so six months previously, and it cannot be exported or shown to outside entities without regulatory authorisation. The...