Driving between Geneva and Megeve in winter: what really changes
People tend to picture the mountain road in winter as an ordeal: snow, ice, hairpins. The reality is more mundane. What lengthens the journey is almost never the road surface. It is the vehicles that are not equipped to be on it.
The legal requirement, first
From 1 November to 31 March, French law requires winter equipment across the entire road network of Haute-Savoie. It applies to residents and visitors alike, and it does not depend on the day’s weather: it is a calendar obligation.
There are two ways to comply:
Winter tyres marked 3PMSF, the small mountain-and-snowflake pictogram.
Fitted to all four wheels. All-season tyres qualify if they carry the same marking.
Or metal chains, or textile snow socks.
For at least two drive wheels, carried in the vehicle and readily accessible.
What actually slows the journey down
A snow-covered road between Megeve and Sallanches does not in itself cost thirty minutes. A poorly shod vehicle spinning on a climb does. The traffic behind it begins to stutter, and it is that concertina effect that costs time, not the snow.
Hence a rule that often surprises: in winter, the margin I build in is not there to drive more slowly. It is there to absorb everyone else.
All-wheel drive: what it gives you, and what it does not
Our Mercedes V-Class is a 4Matic. In this valley, all-wheel drive is not a refinement: it is the difference between reaching the chalet and stopping at the bottom of the resort.
It helps with traction, particularly on cambered chalet approaches or on fresh snow. It does not shorten braking distances, and it does not exempt you from the winter equipment rules. No vehicle makes caution optional.
If you are driving yourself
Three points visitors often overlook.
A hire car is not automatically equipped. Winter equipment has to be requested explicitly when booking, and checked at the desk.
Crossing Switzerland requires a motorway vignette to use Swiss motorways and semi-motorways. It costs 40 CHF in 2026 and also exists as an e-vignette linked to the number plate.
Arriving off a night flight is poor preparation for a mountain road. That may be the most important point, and the one least often said.
What we do on our side
The vehicle is equipped for the season before it starts, not at the first snowfall. Departure times take account of the real state of the road that morning, rather than the night before.
And when conditions deteriorate, the margin built into the departure absorbs the delay without you having to manage it. It is the same reasoning set out in the article on what time to leave Megeve for a flight from Geneva.
Transfers run right through the season, from the first snow to the resorts closing. Equipped vehicle, a driver who knows the approaches, and a margin calculated on the day’s conditions.
Booking around the clock, by phone or WhatsApp on +33 6 77 10 86 27, or by e-mail.
Frequently asked questions
Is winter equipment compulsory in Haute-Savoie?
Yes, from 1 November to 31 March, across the whole road network of the department. You need either winter tyres marked 3PMSF on all four wheels, or chains or snow socks for two drive wheels, carried in the vehicle.
Are all-season tyres enough?
Only if they carry the 3PMSF marking, the mountain-and-snowflake pictogram. A tyre marked only M+S is no longer sufficient.
Do I really need to leave earlier in winter?
Yes, though less because of the snow than the traffic it slows. The margin mostly absorbs poorly equipped vehicles blocking the climbs.
Do I need a vignette to cross Switzerland?
Yes, to use Swiss motorways and semi-motorways. It costs 40 CHF in 2026 and is available as an e-vignette linked to the number plate.
Does all-wheel drive remove the need for winter equipment?
No. It clearly improves traction, which matters on chalet approaches, but it does not replace the legal equipment and does not reduce braking distances.