Police still want to speak to witnesses regarding the accident on the M62 between Ainley Top and Brighouse on Good Friday.
At just after midday on the eastbound section police received reports of a multi vehicle collision in which a 90-year-old woman received fatal injuries.
The woman, not yet named by police, had been a passenger in a Vauxhall Vivaro van which suddenly went across the road and was then in collision with a Kia Picanto.
The male Picanto driver received minor injuries in the incident as did the male driver of the Vivaro.
Officers are currently investigating the full circumstances of what took place and inquiries remain ongoing.
Any witnesses to the incident or anyone with any information should contact the Major Collision and Inquiry Team on 101.