What is a key difference between stationary and mobile radar speed units?

The correct answer highlights that stationary radar speed units are fixed in one location, whereas mobile units are designed to be mounted on vehicles. This distinction is significant because it affects how each type of radar is deployed and utilized in speed enforcement.

Stationary radar units are often placed at specific locations, such as known speed zones or areas with a history of speeding violations. Their fixed position allows for consistent monitoring of traffic at that site. Conversely, mobile radar units offer flexibility, as they can be transported and used in various locations, enabling law enforcement to target different areas as needed.

This distinction is crucial in law enforcement practices, as it helps officers strategize their speed enforcement efforts based on traffic patterns and problem areas. Understanding this difference enhances the application and effectiveness of radar speed detection in various contexts.