A modern country with some of the best roads, infrastructure, and quality of living in the world, Austria is a very easy country to explore on your own.
Austria is not a large country and distances between its main cities are relatively short. It takes about three hours to drive from Vienna to Salzburg, five hours from Vienna to Innsbruck, and six hours from Vienna to Bregenz in the far west of the country. A trip from Linz in the north to Klagenfurt in the south only takes about three hours by car.
The driving culture in Austria is similar to Austrians themselves — relaxed and polite. Do keep in mind that your vehicle needs a highway vignette to travel on Austrian roads which should already be on your car (though you may be charged a separate fee for it). If you enter Austria with a car rented in one of its neighboring countries, you will have to buy the vignette upon entering the country. See the official Austrian toll road website
for more information.
Unlike in neighboring Germany, there are no highways in Austria without a speed limit. Speed limits are strictly enforced and speed cameras are in use in Austria; the fines for speeding are rather high and your rental car provider might also include an additional fee for administering the fine.