Fantastic scenery, and the highest pass in Austria. Open May to November. Can be busy - so probably best to avoid at weekends. Very popular with bikers, but cars too. You need a head for heights and have to like hairpins too. Some nice fast stretches too. Very few hazards except the road itself: the 29 hairpin bends. Visibility is good though, and there are hardly any side roads. Jusat watch out for people gawping at the scenery. 360 views from the Edelweissspitze - stop for food and a beer there as well. It is a toll road though. Euro 17 for a day/ Euro 30 for a 30 day pass. Their stated aim is to be the most biker friendly pass in the Alps! More info here www.grossglockner.at