More strikes on Hull Trains underway
The operator said most services ran during previous strikes over the dispute.
Drivers at Hull Trains are striking on Good Friday in a long-running dispute over the sacking of a colleague.
Members of Aslef will walk out for the day, warning that services will be disrupted.
The union say a driver was unfairly dismissed after raising a safety issue at a meeting, a claim the company denies.
The operator added most services ran during previous strikes over the dispute.
The company operates services between Hull and London King's Cross, with stops at stations including Selby, Doncaster, Retford and Grantham.