An Analysis of Detectability of Vulnerable Road Users Using Fuzzy Signal Detection Theory

It is important that advanced driver assistance systems provide drivers with alarms at the time when the driver fails to detect vulnerable road users (VRUs). In this study, we employed the paradigm which was developed by Yang et al. to analyze the detectability of VRUs at the intersection. Nine VRUs were involved, including pedestrians, cyclists, and motorbikes in the same direction as the driver, in the opposite and orthogonal direction to the driver. As the results, the detectability of pedestrians and motorbikes were lower than the detectability of cyclists. On the other hand, the detectability of VRUs in the same direction as the driver was lower than the detectability of VRUs in other directions.