North Carolina RADAR State Practice Exam

What feature of Opposite Direction Moving Radar is important for police officers?

1. A greater closing speed than that of a stationary vehicle

2. A greater closing or separation speed than that of the patrol vehicle

3. A lesser closing speed than the target vehicle

4. No significant speed difference

The correct answer is: A greater closing or separation speed than that of the patrol vehicle

In the context of Opposite Direction Moving Radar, the most important feature for police officers is the greater closing or separation speed than that of the patrol vehicle. This aspect is crucial because the radar system calculates the speed of the target by measuring the difference in speed between the police vehicle and the vehicle being monitored. When the radar is directed at a vehicle coming from the opposite direction, the combined speeds of both vehicles lead to a higher closing speed. This results in more accurate readings of the target vehicle's speed. The effectiveness of the radar in this scenario is due to the additional speed component created by the direction of travel, which allows officers to capture more precise speed measurements that are essential for law enforcement purposes. Understanding this feature is vital for officers as it influences how they assess the speed of approaching vehicles and ensures that they can properly enforce speed limits while relying on accurate data from the radar equipment.