Emergency services were called to Tarago Road, about 34 kilometres from Canberra about 10am on Sunday to reports a cyclist was hit by a car. A medical helicopter also responded.

The woman died at the scene.

A crime scene was established and will be forensically examined.

Police say the male driver of the car was not physically injured will be taken to hospital for mandatory testing.

Traffic diversions are in place and motorists are urged to monitor livetraffic.com

Anyone with information that may assist investigators is urged to contact Crime Stoppers.