The use of mobile devices can easily divert a driver's attention away from the road. Dangerous driving, such as textingand driving, can cause havoc in traffic and jeopardize safety. The goal of this project is to develop an accident-avoidance system that can detect the presence of a mobile phone in the driver's hand by installing an in-car camerfacing the driver and runninga YOLOv3-Tiny algorithm for mobile phone detection.