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Automotive Articles

Vehicle lighting: make sure it's correctly adjusted!


In the article "Le secret d’un éclairage automobile 2,3 fois plus lumineux" (The secret to 2.3 times brighter lighting) we explain how powerful lighting allows the risk of accidents to be reduced. In fact, almost half of fatal accidents take place at night. The cause: a lack of light, tiredness, and glare. Having correctly adjusted lights is as essential as having powerful lights.

 

Two in five drivers have already experienced a dangerous situation involving a vehicle with poorly adjusted or broken lights. Yet, a displacement of light by only 1% upwards multiplies the risk of glare by a factor of 20. A displacement of 1% downwards means an average loss of 30 metres of driver visibility. To ensure good driver visibility and avoid glare, it is therefore recommended to regularly check certain equipment:

 

  • Check the adjustment of your lights at least once a year
  • Change light bulbs in pairs in order to maintain uniform lighting
  • Check the condition of your wiper blades. Worn blades can leave marks, which reduce visibility
  • Clean the windscreen. If it's dirty, it can mean up to a 30% loss in visibility
  • Check your windscreen washer level
  • Also clean the windows, mirrors, headlights and all other lights.

 

Second most popular reason for follow-up visits

 

The vast majority of drivers claim to check their lights at least once a year. More than half of them
—retirees for the most part—seek assistance from a mechanic and one in five drivers have their lights checked during their MOT. Lighting is the second most popular reason* for a follow-up technical visit for cars. According to the Organisme Technique Central (UTAC-OTC) (central technical organisation), nearly 9% of follow-up visits are due to lighting/signalling faults: 3.3% for a light set too high or a non-compliant dipped headlight beam; 2.7% for brake light faults; 2.5% for position lamp faults and 1.7% for abnormally low adjustment of dipped headlights. It can be worthwhile for mechanics to educate their clients before the MOT. The Association Prévention Routière (road prevention association) offers this instruction every year during its "Lumière et Vision" (light and vision) weeks. The national campaign invites motorists, in particular, to carry out an assessment of visibility factors for their vehicle.

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