| 摘要 |
An array of inductive sensors 1 comprises at least one sensor 2 generating a vertical sensing region 7 and at least one other sensor 3, 4 for generating a sensing region 5, 6 inclined at an angle to the road surface 8. A region of space between each sensing area enables vehicles in the sensing regions to be monitored or analysed by control means. The sensing means is preferably installed in a single saw cut in the road surface. The sensors may be arranged across a lane of the highway or in an alternative arrangement between the lanes. In the latter embodiment the sensing regions associated with the inclined sensors may lie wholly within a lane with the vertical sensing region lying along the lane boundaries. In this arrangement the sensor array can detect vehicles changing lane. |
