专利类型:
区域机场群专利导航
公开（公告）号:
US6262673B1
申请日:
2000-05-30
申请局:
US
摘要:
A roadway warning system includes a visual traffic directing device that is at a first status for a first status time period and that is at a second status for a second status time period. A transmitter transmits a signal for a first signal time period, and a receiver mounted on the vehicle receives the signal. An indicator connected to the receiver indicates that the visual traffic directing device is either at the first status or is about to change to the first status so that a driver of the vehicle is warned of the present or future status of the visual traffic directing device. A method of warning a driver of a vehicle about the status of a visual traffic directing device includes transmitting a directional radio signal beginning at a predetermined time before the traffic directing device changes to a status, receiving the signal if the vehicle is approaching the traffic directing device from a first direction, and indicating that the visual traffic directing device is at the status or that the visual traffic directing device is about to change to the status by an audio message that is capable of being heard by the driver of the vehicle so that a driver of the vehicle is warned of the present or future status of the visual traffic directing device.
原始专利权人:
KALINA CHARLEEN L.
当前专利权人:
KALINA CHARLEEN L.