Vehicle and bicycle communication to avoid vehicle door crash accidents

A method, computer system, and a computer program product for communicating between a bicycle and a vehicle to prevent vehicle open door accidents is provided. The present invention may include collecting data from a vehicle device associated with the vehicle and a bicycle device associated with the bicycle, wherein the vehicle device and the bicycle device transmit and receive alert signals and proximity alerts. The present invention may also include determining the vehicle is involved in a high-risk activity. The present invention may then include determining the bicycle is in proximity of the vehicle involved in a high-risk activity. The present invention may further include transmitting, by the bicycle device, the proximity alerts to the vehicle involved in a high-risk activity. The present invention may then include transmitting, by the vehicle device, the alert signals to the bicycle device that the vehicle is involved in a high-risk activity.