Which of the following are common types of errors that occur with RADAR equipment?

Calibration errors and operator misinterpretation are indeed common types of errors that can occur with RADAR equipment. Calibration errors happen when the radar system is not properly adjusted or set up, leading to inaccurate measurements. This could be due to a variety of factors, such as equipment drift over time or incorrect setup procedures. Operator misinterpretation refers to mistakes made by the person operating the equipment, which can occur if they misread the data or make incorrect assumptions based on what they see. Both of these factors can significantly impact the reliability of RADAR data and consequently affect enforcement actions or data usage.

The other types of errors mentioned are not as fundamental to the operation of RADAR technology itself. While visual obstruction and weather conditions can affect the performance of RADAR, they are external factors rather than inherent errors in the equipment or operation method. Accuracy fluctuations and interference may happen but aren't as directly tied to operator actions or the need for calibration. Similarly, false alarms and sensor malfunctions can occur but are typically influenced by external factors or equipment aging rather than miscalibration or operator error. Thus, the association of calibration errors and operator misinterpretation with common RADAR errors is well-founded and fundamental to the effective use of this technology.