Is sleeping in a stationary car allowed? Is it a fine? Check out what the law says and what the risks are

By Julia Vargas
Published on 2026-05-27 at 07:00 AM
Updated on 2026-05-27 at 09:48 AM

You’ve probably come across a person sleeping inside a stationary car, or have you ever thought about parking your vehicle to take a nap in the middle of a trip or a long day. But, many drivers wonder: is this practice allowed? Can I get a fine or be punished by any authority?

In this article you can check the answers to these questions, what Brazilian legislation says and understand what risks you can run in this situation.

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Sleeping in a parked car is not an action provided for by the CTB

In the Brazilian Traffic Code (CTB) there is no text that prohibits a person from sleeping inside a regularly parked vehicle. Therefore, the mere fact of resting in the car does not generate a fine.

However, according to Julyver Modesto de Araújo, a lawyer specializing in traffic, when you take a nap in your car, you are subject to the approaches of authorities, such as police or traffic agents. These actions occur for security reasons, inspection or suspicion of some irregularity.

The driver will only be punished in any way if during the approach irregular situations are found, such as a car stopped in a prohibited place or some illegality as to the origin of the vehicle. There may be appropriate administrative or criminal measures.

Sleeping is not the problem, but how and where you park is

If the vehicle is parked in a prohibited place, irregularly or causing obstruction of the road, there may be infractions related to parking, not to the act of sleeping. This includes parking:

on the corners and less than five meters from the edge of the alignment of the cross road;
away from the sidewalk guide (curb) from fifty centimeters to one meter;
more than one meter away from the sidewalk guide (curb);
in disagreement with the positions established in the Traffic Code;
on the carriageway of roads, highways, rapid transit lanes and roads with shoulders;
next to or on fire hydrants, water registers or manhole covers of underground galleries, provided that they are properly identified, as specified by Contran;
on the shoulders, except for reasons of force majeure;
on the sidewalk or on a pedestrian lane, on a bike path or bike lane, as well as on islands, refuges, next to or on medians, lane dividers, channel marks, lawns or public gardens;
where there is a lowered sidewalk guide (curb) intended for the entry or exit of vehicles;
preventing the movement of another vehicle;
next to another vehicle in double file;
in the area where roads cross, hindering the circulation of vehicles and pedestrians;
where there is horizontal signage delimiting the point of embarkation or disembarkation of public transport passengers or, in the absence of such signage, in the interval between ten meters before and after the point mark;

in viaducts, bridges and tunnels;
in the wrong direction;
uphill or downhill, not being properly braked and without a safety chock, when it is a vehicle with a total gross weight of more than three thousand five hundred kilograms;
in disagreement with the conditions specifically regulated by the signage (sign – Regulated Parking);
in places and times specifically prohibited by signage (sign – No Parking);
in places and times of parking and stopping prohibited by signage (sign – No Stopping and Parking);
in vacancies reserved for people with disabilities or the elderly, without a credential proving such condition.

If you drink, do not drive or sleep inside the vehicle

According to Julyver Modesto, if the car is effectively parked, it is not possible to automatically assume that there was driving under the influence of alcohol just because the person was inside the car after drinking alcohol.

However, the situation changes if the vehicle is not parked correctly. If the car is only immobilized in the middle of the road or in a situation incompatible with normal parking, the driver may have problems, especially when the driver has fallen asleep due to alcohol intake.

In these cases, the circumstances may indicate that the driver drove the car under the influence of alcohol. In addition to the fine for parking irregularly, according to articles 165 and 306 of the CTB, he can:

Receive another fine (R$ 2,934.70);
Imprisonment from six months to three years;
Have the CNH suspended or be prohibited from obtaining a permit or license to drive a motor vehicle.

Sleeping in the car can put your life in danger

If you are considering taking a nap inside your vehicle, be aware and take into account the public safety aspect. Sleeping in the car can make you a more vulnerable target for theft, robbery, and other risky situations, especially at night or in isolated places.

In addition to the personal safety risks, Julyver Modesto also highlights the health danger, especially if the vehicle remains on for long periods. The main problem is carbon monoxide poisoning, this toxic gas produced by engine combustion is odorless and potentially fatal.

The lawyer specializing in traffic says:

In situations of mechanical failure, exhaust leakage or ventilation deficiency, this gas can enter the interior of the vehicle, including through the air conditioning system. The risk is even greater because the initial symptoms, such as drowsiness, dizziness, headache and confusion can go unnoticed, leading the person to continue sleeping without realizing the intoxication.”