I was driving while at work, going towards Southampton from Havant-ish. We were stuck in traffic on the A27 due to an incident so a co-worker directed me down some back roads to avoid it. We left the "motorway" at Cosham and rejoined at J11. He directed me left off Boarhunt Road -
https://goo.gl/maps/UbHU4X2VqRG2 which had no signage for some reason. As I saw the sign for the roundabout, I moved into the right hand lane to go right at the roundabout... And then oncoming traffic appeared in my lane...
It was dark and raining, traffic was stop/start in the left lane but barely any oncoming traffic. I'm not sure why I did it, other than being an idiot. It's embarrassing considering that I passed the RoSPA test last month and passed the B+E test yesterday...