Port restrictions and canceled flights are straining the ability to replace seafarers on board ships, further weakening global supply chains already snarled by the coronavirus pandemic.

American Trucking Associations’ National Truck Driving Championships and National Step Van Driving Championships have been canceled due to coronavirus-related concerns. But states remain free to make independent decisions about their own events.

The head of the National Transportation Safety Board agreed more transparency would improve the public’s understanding of a high-profile report after a federal watchdog recommended better access to its methodology.

Where and how consumers and businesses are spending money now, and how those habits might shift in the near future, will shape how the economy — and the trucking industry — will manage through the impact of the COVID-19 crisis, experts said.