I feel nervous driving in long tunnels. What route should I follow to go from Colmar, France to Interlaken?
The best option is probably to leave the driving to a professional driver, eg, a train driver :-)
I have been driving for many years but lately due to my eye weakness, I get nervous with lights inside closed areas especially for long tunnels. I have no problem with < 2 km tunnels.
that is a sign of cataracts and you shouldn't be driving at all. How wide is your peripheral vision?
It is early cataracts. But now I have no choice but to go back to Interlaken then to Geneve to return a rented car before flying back home. I just need to know which route with shorter tunnels. I hope some one help me ASAP. Thanks.
If it is a french rented car see if you can return it in Colmar in stead. If you really have suddenly developed sight problems you should not drive.
I found this website for RVers, with a map showing tunnels. https://alanrogers.com/articles/camping-caravan-road-trips/major-mountain-roads-tunnels-passes-europe#interactive-map-of-mountain-roads-passes-and-tunnels
It doesn't show any tunnels between Colmar and Interlaken, which seems a little suspect.
I understand you're in a bind, but I would really look at dropping the car off (maybe in Basel?) and getting on a train.
Alan Rogers need to check Google Maps.....
You do not say what you whole itinerary is. Are you renting the car in France and returning it to France? You do know about getting a Swiss vignette.
The Belchen Tunnel on the A2 between Basel and Olten is 3.2 km. That looks to be the longest tunnel on the route.