Bah - got horn blown at me, and resorted to flipping off motorist.
There are a few sliproads to cross on my route. Usual tactic is to look for a gap in traffic, indicate and nip across - should be fine.
This morn I looked behind me, 3 cars back (a long way back) there is a car indicating left to pull into the sliproad. They were straddling the line between sliproad and the main road.
So I indicated, and nipped right, joining main carriageway. 40 yards further on, car undertakes, slows down and hammers their horn. wtf? If I'd waited for them to overtake, I'd have been going up the sliproad!