North Carolina RADAR State Practice Exam

Setting radar sensitivity to "high" allows the device to:

1. Ignore weak signals

2. Only track nearby vehicles

3. Detect weakened reflected signals

4. Measure speeds of more distant vehicles

The correct answer is: Measure speeds of more distant vehicles

Setting radar sensitivity to "high" enhances the device's ability to detect and measure the speeds of vehicles that are farther away. By increasing sensitivity, the radar can pick up weaker signals that may be reflected from distant objects, which allows it to continue functioning effectively even over greater distances. When sensitivity is set to high, radar can react to a wider range of signal strengths, making it possible to identify vehicles that are not only near but also further down the road. This is particularly useful in traffic enforcement and monitoring, where understanding vehicle speed as they approach or pass by is essential. The other options do not correctly reflect the functionality of high sensitivity. For instance, the idea that a high sensitivity setting would ignore weak signals contradicts the nature of increased sensitivity, as the device is specifically tuned to recognize such signals. Similarly, focusing only on nearby vehicles would limit the range of detection, which is not the purpose of adjusting sensitivity to a higher setting. Lastly, the option about detecting weakened reflected signals is less precise than acknowledging that increased sensitivity directly contributes to measuring the speeds of vehicles at greater distances.