| 摘要 |
To enable enforcement and monitoring of safety regulations, a system records events of broadcast communications from a driver's or machine operator's mobile communication device. The events may be annotated with other fact or circumstances, such as time, duration, speed of vehicle, motion of vehicle, type of communication, or mode of communication. The event may be determined through use of direction receive only antennas capable of receiving only those signals aligned with the antenna, signals not aligned with the direction of the antenna are not received and thus do not create a recordable event. The recorded event may be broadcast to an organization or person in real time or may be retrieved periodically. The event may also produce an alert for persons or other operators proximate the vehicle or machine. |
