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The Headlight Law requires vehicles without DRL (Daytime Running Light) to keep their low beam headlights on during the day on single-lane highways outside urban areas, and non-compliance results in a fine of R$ 130.16 with 4 points on the CNH, a regulation that catches drivers of older cars off guard.
The Headlight Law continues to surprise drivers who travel on Brazilian highways without knowing that they can be fined even when driving in broad daylight. The rule provided for in Law No. 14.071, which updated the Brazilian Traffic Code and came into force in October 2020, requires vehicles that do not have Daytime Running Lights (DRL) to keep their low beam headlights on when driving on single-lane highways outside urban areas, a requirement that mainly affects owners of older cars that do not have the automatic lighting system present in models manufactured in recent years. The penalty for non-compliance with the Headlight Law is a fine of R$ 130.16 and 4 points on the National Driver’s License, amounts that weigh heavily on the pockets of those who only discover the infraction when the notification arrives by mail.
The problem is not the law itself, but the lack of awareness that persists six years after its entry into force. Many drivers confuse the requirement of the Headlight Law with the old headlight obligation on highways that was in force in a different way in the past, and others simply do not know that their vehicle does not have DRL and that they need to manually activate the low beam headlights when entering a single-lane highway. Enforcement remains active throughout the country and makes no distinction between those who violate the Headlight Law out of ignorance and those who do so out of negligence: the fine is the same in both cases.
What the Headlight Law requires and who needs to worry
The rule is objective, but its application depends on the type of vehicle. The Headlight Law stipulates that vehicles without daytime running lights must keep their low beam headlights on during the day when driving on single-lane highways located outside urban areas, a text that the legislation itself expresses by stating that “vehicles that do not have daytime running lights must keep their headlights on on single-lane highways located outside urban areas, even during the day”. In practice, this means that older cars manufactured before DRL became mandatory require the driver to manually turn on the low beam headlights every time they enter this type of road.
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Newer vehicles equipped with factory DRL are exempt from turning on their low beam headlights during the day. The Daytime Running Light system automatically activates the front lights when the engine is started, and this lighting already fulfills the requirement of the Headlight Law without the need for driver intervention. This distinction is important because many people who drive new cars believe that the Headlight Law has been revoked, when in fact what happened is that the vehicle’s technology now automatically meets the requirement, while those who drive older models need to comply with the same rule manually.
What is the difference between low beam headlights and daytime running lights according to the Headlight Law
One of the most frequent confusions among drivers involves the difference between conventional low beam headlights and the DRL system. Low beam headlights are the traditional lighting system that the driver activates via a lever or button and that projects a beam of light onto the road, while DRL (Daytime Running Light) is an independent system that keeps the front lights on with lower intensity and energy consumption, specifically designed to increase vehicle visibility during the day. For the purposes of the Headlight Law, both fulfill the same legal function, but only vehicles equipped with factory DRL are exempt from manually turning on their low beam headlights.
Experts warn that not every light on the front of the car meets the requirement of the Headlight Law. Decorative lights, parking lights, and improvised adaptations to the electrical system do not replace the low beam headlights required by law, and drivers who believe they are complying with the rule because their vehicle has some type of front lighting may be surprised with a fine upon discovering that that light is not considered valid by enforcement. The recommendation is to check the vehicle’s manual to see if it has factory-approved DRL and, if not, to make it a habit to turn on the low beam headlights when entering any single-lane highway outside the urban area.
How Headlight Law enforcement works on highways
The penalty for non-compliance with the Headlight Law is classified as a medium infraction in the Brazilian Traffic Code. The 4 points on the driver’s license and the R$ 130.16 fine are applied when the driver travels on a single-lane highway outside urban areas without using the lighting system required by law, and enforcement can be carried out by both traffic agents and electronic equipment positioned along the highways. The driver may not even realize they have been fined at the time of the infraction and only become aware when the notification arrives weeks later, a scenario that particularly frustrates those unaware of the Headlight Law’s requirement.
Enforcement is more concentrated on federal highways, but the rule applies to any single-lane highway outside urban areas. Sections with higher traffic flow, sharp curves, and low visibility conditions are points where the Headlight Law is especially rigorously applied because these are precisely the locations where daytime lighting makes the most difference in preventing head-on collisions during overtakes. The main objective of the legislation is to reduce accidents by making vehicles more visible, and every driver who travels without headlights on in these conditions poses a risk to themselves and to everyone sharing the road.
How to avoid the Headlight Law fine with five simple checks
Preventing a fine requires precautions that road safety specialists consider basic. Before hitting the road, the driver should check if the vehicle’s lighting system is working correctly, confirm if the car has factory-installed automatic DRL daytime running lights, replace burnt-out bulbs that might go unnoticed in urban use, avoid improvised adaptations to the electrical system, and observe dashboard alerts about light failures. These five checks take less than five minutes and can prevent the R$ 130.16 fine that the Headlight Law imposes on those who fail to comply with the rule.
For drivers of older vehicles, the recommendation is to make turning on the low beam headlights an automatic routine. Just as the seatbelt has become an instinctive gesture upon entering the car, turning on the headlights when accessing a single-lane highway needs to become a habit that doesn’t depend on remembering the Headlight Law at the right moment. The R$ 130.16 fine and 4 points on the license are avoidable consequences for those who incorporate the gesture into their routine, and the safety that illuminated headlights provide by making the vehicle more visible is a benefit worth much more than the cost of the bulb that stays on during the journey.
And you, have you ever been fined under the Headlight Law? Did you know that cars without DRL need to keep their low beam headlights on during the day? Leave your opinion in the comments.
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