Which speed detection method is more effective for short distances?

The effectiveness of the speed detection method for short distances is best attributed to Lidar technology. Lidar, which stands for Light Detection and Ranging, utilizes laser beams to measure the distance between the device and a target. This enables highly accurate speed measurements over short ranges, allowing for pinpoint targeting of specific vehicles even in crowded traffic situations.

This precision is crucial when operating in scenarios where vehicles may be closely spaced, such as in urban settings or at traffic stops. Lidar's narrow beam focus equips it to effectively capture speed data without interference from nearby moving objects or environmental factors, making it particularly suitable for short-distance measurements.

In contrast, the other methods—such as radar—generally use broader signals that can be influenced by multiple vehicles or objects in their detection field, which can reduce accuracy when measuring speed over shorter distances.