Swiss roads are generally good, although mountain routes can be narrow and winding. Chains and/or snow tyres may be required in winter, and some routes may be closed altogether after heavy snowfall. There is a telephone number for information on national road conditions (tel: 163).
Traffic in Geneva drives on the right and the minimum driving age is 18. Speed limits are 120kph (75mph) on motorways, 100kph (62mph) on dual carriageways, 80kph (50mph) on main roads and 50kph (31mph) in towns.
On minor roads, traffic going up a mountain has priority. Road numbers on green signs indicate toll expressways, where a toll vignette (sticker) must be displayed. You can order one online before you travel (http://rail.myswitzerland.com). Stickers are valid for one calendar year. A national driving licence is sufficient documentation, although Green Card insurance is recommended.
There are two motoring associations in Switzerland: Touring Club Suisse (TCS) (tel: +41 844 888 111; www.tcs.ch) and Automobil Club der Schweiz (ACS) (tel: +41 31 328 3111; www.acs.ch).