Hong Kong transport authorities have ordered the operator of a major road link feeding the airport to explain its handling of an accident that paralysed traffic during evening rush hour, leaving commuters fuming. Traffic was snarled for more than three hours after a medium goods vehicle overturned following a collision with another vehicle on the Cheung Tsing Highway in Tsing Yi on Wednesday. Police said they were alerted at 7.36pm and the drivers of the two vehicles were sent to Princess...