CITA Highlights Headlamp Aiming Challenges at UNECE GRE
Geneva, 22 October 2026 – CITA carried out a live demonstration of headlamp aiming during the 95th session of the UNECE Working Party on Lighting and Light-Signalling (GRE), held at the Palais des Nations in Geneva, Switzerland.
The demonstration aimed to highlight the practical limitations of headlamp aiming measurements and the need to reconsider existing assessment criteria to better reflect real-world conditions.
Correct headlamp alignment is essential for road safety, ensuring adequate visibility for drivers while minimizing glare for other road users.
However, assessing headlamp alignment during PTI presents practical challenges. The demonstration provided GRE experts with an opportunity to observe these limitations in a real inspection setting, using a vehicle and headlamp testing equipment. The main objective was to demonstrate why headlamp aiming criteria should be reconsidered to account for the practical limitations encountered during inspections.
Through this initiative, CITA sought to contribute practical inspection experience to international regulatory discussions, supporting requirements that are both technically justified and realistically applicable throughout the vehicle’s service life.
CITA would like to express its sincere appreciation to everyone who made this demonstration possible:
- Dietmar Fink (MAHA) for providing the headlamp testing equipment.
- Peter Ondrejka (TESTEK) for leading the CITA Task Force on Lights and Reflective Devices and coordinating the demonstration.
- Hervé Wicky (Hella Gutmann) for supporting the demonstration.
- Benjamin Borlat (Service des Automobiles et de la Navigation, Vaud, Switzerland) for facilitating local coordination.
- Pierre-André Keller (Garage Keller) for providing the vehicle.
- The UNECE GRE Secretariat for its valuable support.
Their contributions enabled CITA to bring practical inspection experience directly into the international regulatory discussion.
CITA remains committed to ensuring that vehicle regulations take into account real-world inspection conditions, helping to maintain vehicle safety throughout their operational life.