Dec 8, 2017 - 10:58 AM
in reply to Lucyliu88
Hi Lucyliu88 -
<<"I can't tell you if chains will be needed on those days (weather is too variable) but the Swiss are pretty good at clearing highways if there is a big snowfall. Check the link above for forecasts a day or two before you travel to see what it will be like.">>
A further note. The shortest route to Luzern (local German spelling) is over the Brunig Pass and takes about an hour. With chains, you would drive more slowly. The elevation of 1008 meters is high enough that the pass might have snow when the valley floor near Interlaken and Meiringen at around 550 meters did not. Although it takes longer, I'd consider the train, When you come back tired late at night, you won't have to worry about the drive.
The timetable can help you understand rail schedules ( as well as other public transport.) Lucas gave yo the link.
It gets dark at around 4:30 PM.
As you approach any Swiss Mountain Pass,there will be a at least one sign along the roads noting (in German) whether the pass is open or closed for driving. In late December it is not likely that you will have problems, but , as noted, the weather is unpredictable. As one example, last Summer, there was snow at Männlichen in August, admittedly at about 2300 meters.