Will you be travelling to Bern by car?
No problem, just bear in mind that the motorways in Switzerland are subject to charge. The annual motorway charge sticker, called vignette, costs CHF 40 and is available at the Swiss border, service stations and post offices.
...from Austria/Germany/Eastern Switzerland
Motorway A1 Zurich-Bern, Motorway A6 Bern-Spiez
...from Germany/France/Northern Switzerland
Motorway A2 Basel-Bern, Motorway A6 Bern-Spiez
...from France/Western Switzerland
Motorway A1 Geneva-Lausanne, Motorway A12 Lausanne-Bern, Motorway A6 Bern-Spiez
...from Italy/Southern Switzerland
Domodossola-Iselle-Simplon-Brig-Goppenstein, Lötschberg car train (Goppenstein-Kandersteg)