That junction is lethal. When northbound on A34 you are pulling up hill and the slip road from A303 is so short it gives little time to pull out.
I move into outside lane before the junction even if no traffic is in slip road
Southbound entry is the same.
I have notified DOT but no answer, more interested in building a new VOSA site at the A34 M3 junctions
plenty long enough for a car to get upto speed though, been on that junction many times fully freighted at 44t, and then no up hill slip road is long enough
Local paper says car driver was turning right into the A30.
This looks to me like car was south on A34 and exited onto A303 bullington cross then went right at roundabout. Don’t know anymore than that.