Driver fatigue is the leading cause of fatalities on motorways. In light of this, Sanef encourages all drivers to take regular breaks at its rest and service areas. But can you really stop there to sleep? What are the rules? Here is a quick overview.

Sleeping at a motorway rest area: is it allowed?

Yes, it is perfectly legal to sleep in your car at a highway rest area, whether for a quick nap or a full night’s sleep. Traffic regulations govern parking, not how you use the vehicle's interior once parked. No national law explicitly prohibits this practice, provided you observe two fundamental rules.

First, you must remain inside the vehicle. Setting up equipment outside (such as tables, chairs, mattresses, or tents) is strictly prohibited and classified as wild camping. This distinction between parking and camping is crucial; violators face a €35 fine.

Second, a specific precaution applies if you have consumed alcohol: you are forbidden from sleeping in the driver's seat. You must lie down on the back seat and remove the keys from the ignition. This is a rule that is often overlooked, yet it is enforceable.

What duration of parking is tolerated?

While there may be no national legal limit, some rest areas have local signs restricting parking—usually to 24 or 48 hours. These restrictions are intended to prevent misuse and ensure spaces remain available for everyone.
There is also an important distinction based on the type of area: rest areas are designed for short breaks (15 minutes to 2 hours), whereas service areas—which offer better facilities—accommodate longer stops. Therefore, if you plan to stay overnight, choose a service area. Finally, always strictly observe any local signs indicating parking time limits.
For a restful stop at Sanef rest areas, follow these best practices:

  • Park in spaces designated for cars (not in spaces reserved for heavy goods vehicles).
  • Do not set up any equipment outside your vehicle.
  • Obey signs indicating time limits.
  • Avoid leaving your engine running while you sleep, for both safety and environmental reasons.
  • Remember to close and lock your vehicle, leaving a window slightly ajar.

What facilities are available at Sanef rest areas?

Sanef rest areas offer a range of facilities designed to make your break as pleasant and safe as possible:

  • Restrooms and showers available at service areas.
  • Green spaces and picnic tables for stretching your legs.
  • Dining and shops at service areas for refreshments.
  • Electric vehicle charging stations across much of the Sanef network.
  • Nighttime lighting and video surveillance to ensure your safety.

Our tips for a peaceful night at a Sanef rest area

To ensure you get the best rest and can safely resume your journey, a few precautions are necessary. Whenever possible, choose a well-lit and visible spot. In summer, park in the shade to prevent the interior from overheating. Remember to turn off the air conditioning or heating if you plan to sleep for an extended period.

Never wait for the first signs of drowsiness before stopping: repeated yawning, heavy eyelids, or difficulty staying in your lane are warning signs that must be taken very seriously. On the highway, a single second of inattention at 130 km/h means traveling 36 meters without control.

In practice, a 15- to 20-minute break is enough to recover from mild drowsiness. If you are extremely tired, aim for at least 1.5 to 2 hours to complete a full sleep cycle before getting back on the road.

Sleeping in your car after drinking: what the law says

This is a specific scenario you should be aware of. If you have consumed alcohol and wish to sleep in your car before driving again, you must under no circumstances settle into the driver's seat. The law strictly forbids this; even with the engine off and the keys removed from the ignition, a driver who appears intoxicated in the front seat can be fined.

A reminder of the law: drunk driving

In France, the maximum permitted blood alcohol level is 0.5 g/l (lowered to 0.2 g/l for novice drivers, effectively meaning zero drinks).

  • Between 0.5 and 0.79 g/l (Minor offense/Contravention): Loss of 6 license points and a €135 fine.
  • 0.8 g/l or higher (Criminal offense/Délit): Court appearance, loss of 6 points, a fine of up to €4,500, license suspension, and up to 2 years in prison.

Traffic laws also penalize the *attempt* to drive under the influence of alcohol. Simply sitting in the driver's seat with the keys nearby is enough for law enforcement to establish this intent. Moving to the back seat is the only way to eliminate any ambiguity.
The right course of action: move to the back seat, remove the keys from the ignition, and wait long enough for the alcohol to clear your system before getting behind the wheel. It is a responsible decision that prevents a much more serious offense.

Sleeping at a Sanef motorway service area is a responsible choice:

It could save your life. Staying inside the vehicle, without external equipment, and within the 24-hour limit—these simple rules ensure a legal and safe rest stop. Take advantage of Sanef’s network of well-equipped rest areas to recharge before getting back on the road with peace of mind.