They have also asked for anyone with relevant dashcam footage to come forward.
A police spokesperson said: “The rider of the motorcycle, an 80-year-old man from Norfolk, tragically died at the scene. His next of kin have been informed.
“Meanwhile the driver of the Citroen did not sustain injuries.”
Police said that emergency services were called and roads in the area remained closed for several hours while they responded.
“Witnesses or anyone with relevant dashcam footage from the area at the time is asked to contact us.”
Email [email protected] or call 101, quoting Operation Barnwell.