This study investigates the effectiveness of geometric treatments at urban intersections in protecting cyclists from motor vehicles executing turning manoeuvres in different environmental lighting conditions. The Corso Vittorio Emanuele II corridor in Turin, Italy, was selected as a case study, focusing on the intersection with Corso Castelfidardo and Corso Inghilterra. The current road layout features shared lanes for vehicles and bicycles, as well as asymmetric geometric solutions on the different sides. The geometric treatments included measures to shorten cyclists' paths and separate them from pedestrians’ interactions, thereby avoiding unpredictable and hazardous conflict dynamics. An experimental investigation was conducted using a fixed-base driving simulator.