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We used AutoTurn by Transoft for years as an AutoCAD plugin years before Vehicle Tracking or even Civil 2D was added to AutoCAD. It was a company in England at the time but it's worldwide now and no longer a simple AutoCAD plugin!

Just remember with say a semi you have to turn outward before turning in the direction you want for tight corners, same with exit oversteer corner. It normally took say 3+ goes to get a smooth path. Followed a road train go through multiple roundabouts in Darwin, a road train is 3 x 19m trailers 66 ton. The driver would go left and right crossing 3 lanes but did not go slow, What was that bump ?