The Federal Decree of 15 June 2012 states that motorists traveling on Swiss territory must drive with their headlights permanently on from 1 January 2014.

New vehicles are equipped with daytime running lights that stay on automatically. For older vehicles, headlights serve as daytime running lights, but it is still possible to subsequently equip cars with specific daytime running lights. This measure is already in force in most European countries. The main objective is to improve the visibility of vehicles, pedestrians and cyclists to help better to assess the distance and speed of approaching vehicles.

From 1 January 2014 , this obligation will therefore apply to all " motor vehicles ( cars , trucks, delivery vans and buses )" as well as " motorcycles " in Switzerland. Exemptions include "electric bikes and vehicles put into circulation before 1970".

Swiss traffic regulations apply on the Swiss part of CERN and French road regulations on the French side. The above requirement must be met on the Swiss side. In France, keeping headlights on permanently is not mandatory but is strongly recommended. Drivers are advised to apply this safety even on the French part of the CERN.