Abstract: A safety system comprising: a safety apparatus adapted to be mounted at the rear of a bicycle and comprising a processor, a motion sensor, a threat sensing device and a user alert device, all coupled to the processor, wherein the processor is adapted to: control the driver alert device based on a threat position value and/or the threat speed value; control the user alert device based on at least one of a motion-based value, an ambient light-based value, the threat position value and the threat speed value. It is also claimed the safety apparatus and a collaborative safety system comprising a plurality of safety systems, each being coupled to a communication device through which the processor is further adapted to control the driver alert device and/or the user alert device of the others of the plurality in response to the sensing of a threat.

Abstract: A safety system comprising: a safety apparatus adapted to be mounted at the rear of a bicycle and comprising a processor, a motion sensor, a threat sensing device and a user alert device, all coupled to the processor, wherein the processor is adapted to: control the driver alert device based on a threat position value and/or the threat speed value; control the user alert device based on at least one of a motion-based value, an ambient light-based value, the threat position value and the threat speed value. It is also claimed the safety apparatus and a collaborative safety system comprising a plurality of safety systems, each being coupled to a communication device through which the processor is further adapted to control the driver alert device and/or the user alert device of the others of the plurality in response to the sensing of a threat.