I'll be going from Milan to Chamonix, then to Ticino.
From Chamonix I can either re-trace my route back to Milan and north from there, or go northeast from Chamonix on route D1506. The latter circle route is an hour longer but avoids backtracking and is probably more scenic. However I'm concerned about driving on D1506. The map shows it as a secondary road and it looks very crooked, especially in the Route de la Forclaz section (where 1506 becomes 21),
I'm a good driver but live in a very flat area. Also I have a slight susceptibility to motion sickness if the road winds continuously back and forth.
Is D1506 - 21 a harrowing or unsafe drive for someone not used to mountainous terrain?
Thank you.