Police Scotland are appealing for witnesses after a road traffic collision near Baberton on the A720 Edinburgh City By-pass on Monday, 19 February 2018.
The collision happened around 6.10 am.
The driver of a black Ford Focus involved in the collision abandoned his car at the scene, causing considerable disruption to traffic.
Officers are now keen to speak to witnesses and are appealing for the driver of the Ford Focus to get in contact.
Constable Alan Musgrave of the Trunk Roads Policing Group said:
We are keen to speak to anyone who witnessed this collision and are particularly asking the driver of the abandoned Ford Focus car to get in touch.
Anyone with information is asked to contact us on 101 quoting incident number 0425 of 19th February.