These users will then get an alarm when they are closer than 15 seconds to a critical point, and a red point locating the radar appears on their screen.

• 当驾驶人员的驾驶车辆靠近临近测速点15秒钟之外时候，即能得到一条警告信息，并在屏幕上显示出来一个红点标出雷达的位置。