Chinese Trucks Idle as Protests Continue

SHANGHAI—As protests by truckers flared into a third day in China's biggest port city and shippers offered the first indications that trade is being slowed, idled trucks illustrated how inflation worries could gum up the world's No. 2 economy.

The truckers' demonstrations and work stoppages, which began Wednesday, are perhaps the starkest sign yet of the widespread public frustration over inflation in China that has persisted despite six months of tightening moves by the government. Truckers have gathered at port facilities to demand higher incomes, citing rising diesel costs and new dock fees.

On Friday, at least 100 parked flatbed ...