I tried to change the geometry of the intersection diagonal ramps at the crossing of 뚝섬로 Ttukseom-ro and <51>고산자로 Gosanja-ro. The diagonal ramps were spread too far ahead of the crossing to generate false turn direction too early from the crossing.
I made a change at the Southern end of 고산자로 Gosanja-ro. But I found that I cannot allow traffic to the new ramp I drew from Eastbound 뚝섬로 Ttukseom-ro to Southbound 고산자로 Gosanja-ro because 뚝섬로 Ttukseom-ro is locked.
Can someone allow traffic (change red arrow to green arrow) to the ramp named “To: <51> 성수대교”?