This is a fast, ton-up-sweeper-and-straights road taking a lot of holiday traffic. Basically it's crap up to Modane so just grin and bear it, then gets really quite good after that towards Lanslebourg. Wide, good surface and not half as much traffic, as most of it's gone on the motorway through the tunnel to Bardonècchia in Italy. The fort at Bramans is particularly impressive.