The best time to leave on a European road trip: reading the official traffic forecasts

Checked on 2026-10-26

On a long drive across Europe, the hour you pull out of the driveway can matter as much as the route you pick. Leave at the same moment as half the country and a ten-hour stage turns into a fourteen-hour one, with tired kids and a hot engine in a queue before a tunnel. The good news is that most countries publish official traffic forecasts well in advance. They are free, they are made by the people who manage the roads, and once you know how to read them they answer the question “when should we leave?” better than any rule of thumb. This guide walks through the main ones, country by country.

France: the Bison Futé calendar and its colours

Bison Futé is the French state’s traffic forecasting service. Each year it publishes a calendar of the expected traffic difficulties on the national road network, with one colour per day and per direction:

Green: usual traffic (“circulation habituelle”).
Orange: difficult traffic.
Red: very difficult traffic.
Black: extremely difficult traffic.

Two details are easy to miss. First, every day has two colours: départ (from Paris towards the regional cities, and from the cities towards the coast, or the ski resorts in winter) and retour (the opposite way). A Saturday can be black outbound and merely orange on the way back. Second, the small numbers next to a colour point to the six Bison Futé regions where it gets worse locally (1 Île-de-France, 2 Grand-Ouest and Nord, 3 Bourgogne and Est, 4 Auvergne-Rhône-Alpes, 5 Sud-Ouest, 6 Arc méditerranéen).

In the 2026 calendar, Saturday 1 August was classified black for departures, and several Fridays and Saturdays in July and August were red in one or both directions, including Saturday 8 August in both. Summer weekends are the dates to treat with care. Bison Futé also releases around thirty detailed forecasts a year, a few days before each busy period, which list the roads under pressure and the hours to avoid. Those detailed forecasts, not the yearly calendar, are what you should read the day before you leave.

Spain: DGT special operations and hours to avoid

In Spain the Dirección General de Tráfico (DGT) runs “operaciones especiales” around the big travel peaks: summer departures, the August bank holiday, Easter, long weekends and the summer return (“operación retorno”). During these operations it sets up reversible and extra lanes, suspends roadworks and restricts some vehicles. Its press release for the first August weekend of 2026 asked drivers to plan ahead, check the traffic before setting off, choose hours with less traffic and consider alternative routes.

For an ordinary weekend, the DGT’s traffic recommendations page gives concrete time slots. When we checked it, the unfavourable windows were Friday from 19:00 to 21:00 (leaving the big cities), Saturday from 11:00 to 13:00, and Sunday from 18:00 to 22:00 (coming back into the cities). These are general forecasts that the DGT updates, so read the page again for your own dates.

Germany: the ADAC weekend forecast

Germany does not have a single government colour calendar like France. The most widely used reference is the Stauprognose (traffic jam forecast) of ADAC, the German motoring club, which looks ahead at the coming weekend or holiday period. Its forecast for the last weekend of October 2026, for example, expected the most travel traffic on Friday afternoon and Saturday morning, recommended leaving outside the main traffic hours where possible, and flagged motorway works as the biggest factor. It also warned of waits at German border checks. Remember that ADAC is a private club, not the road authority; it is a useful forecast, not an official order.

Italy: Viabilità Italia’s traffic stickers

Every summer Viabilità Italia, the national road coordination centre chaired by the Traffic Police, publishes its “esodo estivo” plan with a calendar of bollini (stickers). Each day is split into morning and evening, and each half gets a mark: green for normal, yellow for intense, red for intense with possible critical points, and black for critical. The same calendar shows the hours when vehicles over 7.5 tonnes are banned from roads outside towns.

For the late June and July weekends of 2026, Viabilità Italia expected outbound traffic to start on Friday afternoon and stay heavy on Saturday and Sunday morning, with returns peaking on Sunday afternoon and spilling into Monday morning. Anas, which manages the state roads, hosts the calendar on its summer and winter traffic page.

Austria and Switzerland: the Alpine bottlenecks

The north-south Alpine routes are where many European road trips lose the most time. In Austria, the motorway operator ASFINAG issues forecasts before holiday periods. Its release for the October 2026 national holiday and autumn half-term named the A 9 Pyhrn, A 10 Tauern, A 12 Inntal and A 13 Brenner, plus bottlenecks such as the St. Michael toll station on the A 10 and the approach to the Karawanken tunnel, and pointed to its live travel-time information.

In Switzerland the Federal Roads Office (ASTRA/OFROU) publishes forecasts for Easter, the spring holidays, summer and Christmas. Its Easter 2026 forecast singled out the A2 Gotthard and the A13 San Bernardino, with long waits expected before the north portal of the Gotthard road tunnel. Car shuttle trains (Lötschberg, Furka, Vereina) are an alternative, but the same release warned of waits at the loading stations during the day, so they are not a free pass either.

A quick comparison

Country	Publisher	What you get
France	Bison Futé (state)	Yearly calendar, green/orange/red/black per day and direction, detailed forecasts a few days ahead
Spain	DGT (state)	Special operations for peak periods, weekend hours to avoid
Germany	ADAC (motoring club)	Weekend and holiday jam forecast
Italy	Viabilità Italia (state)	Summer calendar, morning/evening stickers, truck bans
Austria	ASFINAG (motorway operator)	Holiday forecasts, live travel times
Switzerland	ASTRA (federal roads office)	Holiday forecasts for Gotthard, San Bernardino and car trains

Early start or night drive?

Most forecasts point the same way: the trouble starts on Friday afternoon and builds through Saturday, and returns concentrate on Sunday afternoon. An early start on a day that is not red or black is usually the simplest way out. Driving through the night to beat the crowds is tempting, but tiredness is the price. The DGT asks drivers to stop every two hours or at the first sign of fatigue, and Viabilità Italia reminds travellers to set off well rested and to stop often. If you do leave very early, sleep properly the night before and share the wheel if you can.

A checklist for the day before

Look at the yearly calendar when you book, so you can move the departure by a day if it falls on a black or red date.
The day before, read the detailed forecast of every country you will cross, in the direction you are driving.
Check roadworks and closures on the operator sites, and the weather.
Plan your stops in advance so a queue does not push you past a sensible driving day.
Check again just before leaving; forecasts are forecasts.

Sources

How Optitrips helps

Optitrips does not replace the official forecasts, but it does the arithmetic for your own route. Give it a desired departure time and it compares the predicted travel time for departures across a window around it, then suggests the best one. It splits long trips into days with your daily kilometre and driving-hour limits, schedules rest and meal stops and keeps the break time on the day clock, and shows weather and official MeteoAlarm warnings along the way. The app is Android only and currently in closed beta. Join the beta