The police, air ambulance and fire brigade raced to the scene after a crash between two cars outside the station.
A horrified eyewitness tweeted: “There’s been a big crash at the station and there’s fire engines and ambulances everywhere.
“They’ve now cordoned the whole car park off and there’s firemen and police everywhere, my heart hurts, praying everyone involved is okay.
“They’ve got the air ambulance out. I feel sick, this is horrible.”
North Yorkshire Fire and Rescue Service said: “We are attending a road traffic accident outside the station involving at least two vehicles.
“One casualty has been taken by air ambulance to hospital.”
North Yorkshire Police added: “Emergency services are dealing with a serious road traffic collision involving a car and a female pedestrian outside Selby Train Station.
The woman has been airlifted to Leeds General Infirmary with a serious leg injury. Police are investigating at the scene.”
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