Patent ID: 6262673
Filing Date: 2001-07-17
Classification: G08G

Abstract:
A roadway warning system comprising: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, the visual traffic directing device being visible to a vehicle approaching the visual traffic directing device in a first direction;a transmitter that transmits a signal for a first signal time period;a receiver mounted on the vehicle, the receiver receiving the signal;an indicator connected to the receiver that 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, wherein the indicator only indicates that the receiver is receiving the signal when the receiver is in a signal zone, the signal zone having a starting point located a first distance from the visual traffic directing device and an ending point located a second distance from the visual traffic directing device such that the vehicle traveling in the first direction will pass both the starting point and the ending point before reaching the visual traffic directing device,whereby the indicator leaves the signal zone before reaching the visual traffic directing device; andwherein the first signal time period begins a predetermined time before the first status time period begins.