end condition warping - mainlane and driveway

I want to warp the end conditions at the driveways as smooth as sketched in the image.

Things I know-

  • At the seam line, I will use display rules to turn off the mainlane end conditions.
  • I've also used use target aliasing and corridor clipping.

Things I need to know -

"How to smoothen both the end conditions, so it is seen as real"!

Experts guidance is highly appreciated.