1. The location of the accident: If the accident happened in the center of the roundabout, it is more likely that the driver who was entering the roundabout was at fault. If the accident happened on one of the exit roads of the roundabout, it is more likely that the driver who was leaving the roundabout was at fault.
2. The movements of the vehicles: The direction that each vehicle was traveling in can also be used to determine liability. For example, if a driver was turning left into the roundabout and collided with a driver who was going straight through, the left-turning driver is likely to be at fault.
3. The condition of the vehicles: The damage to each vehicle can also provide clues about who was at fault. For example, if a driver was hit from behind, the driver who hit them is likely to be at fault.
4. The testimony of witnesses: If there were any witnesses to the accident, their testimony can also be helpful in determining who was at fault.
In some cases, the fault may be shared between both drivers. For example, if a driver enters a roundabout without yielding to oncoming traffic, and another driver fails to properly yield to traffic already in the roundabout, both drivers may be at fault.
Ultimately, the best way to determine who is at fault in an accident in a roundabout is to consult with a qualified attorney who can review all of the evidence and provide you with legal advice.