| 摘要 |
<p>A device for determining the proportion of atypical moving objects. The device combines at least two systems (11, 12) for transmitting/receiving electromagnetic, sound or ultrasonic waves, arranged at different heights and incrementing counters as moving objects (1, 2) pass by. Said device is particularly suitable for use on roads, in particular to determine the percentage of heavy goods vehicles relative to an overall number of vehicles.</p> |
