===== 27.01.2026 – Study on driving and THC ===== [[https://im.ethz.ch/revelio.html|{{:aktuelles:studiefahren26.jpg?300 }}]][[en:thc_recht/autofahren|Zero tolerance for THC in road traffic]] has been in force for 20 years. As soon as THC is detected in the blood, **a person is considered unfit to drive, even if no impairment is apparent**. It hardly seems possible to establish a meaningful effect limit for THC in the blood. This new study now aims to find out whether the actual, real impairment can be measured or **how it can be determined that the ability to drive is given**. {{ :aktuelles:flyer_studie_cannabis_und_autofahren.pdf |You can find more information in this flyer.}} ----