It's unlikely that there's an established solution yet, so it would hand back control to the driver. Perfectly acceptable for Level 3 and Level 4 automation.
I guess it could also record data on the car blocking the road and send that off to the local authority, as the car would be causing an unnecessary obstruction. That could, in turn, lead to better enforcement of traffic laws, mitigating the issue.
If AI can help issue automated fines to drivers I'm sure it will be a big hit in the UK. Cant wait for AI police cars. Will be amazballz.