| 摘要 |
<p>The present invention relates to a method and apparatus for effectively collecting high reliable traffic information from the moving vehicles by reducing error data. The apparatus for collecting traffic information has sensors to detect passing-on-adjacent-lane cars, which sensors' effective range are adjusted less than the width of a lane on road. Also, if at least 2 sensors are located on the side of the probe car, the distance D between the sensors us adjusted from 5 to 30 centimeters, and preferably, from 10 to 20 centimeters, to detect same car driving on adjacent lane. Also, by the use of state transition of the passing-on-adjacent-lane car. Valid data is selected. Also, in order to eliminate non-vehicle noise, the length of passing-on-adjacent-lane car is produced and then, if the length is not included to a predetermined value, the length is regarded as a noise.</p> |
