What does "lock speed" indicate on a RADAR display?

What does "lock speed" indicate on a RADAR display?

• A. The angle of the RADAR beam
• B. The captured speed of the target vehicle once the unit has detected it
• C. The total distance traveled by the vehicle
• D. The maximum speed limit of the area

Answer: (B)

The term "lock speed" on a RADAR display specifically refers to the captured speed of the target vehicle as indicated by the RADAR unit once it has successfully detected that vehicle. When the RADAR system locks onto a vehicle, it means that it has processed the return signals and calculated the speed of that specific target. This is a vital function for law enforcement or monitoring purposes because it provides the operator with an accurate reading of how fast the vehicle is traveling at that moment. The other options describe different aspects that might be related to RADAR technology or roadway surveillance but do not pertain directly to what "lock speed" signifies. For example, the angle of the RADAR beam relates to its directional capability rather than the speed it captures. Similarly, while the total distance a vehicle has traveled might be measured with other systems, it is not indicated by "lock speed." Lastly, the maximum speed limit of an area is a regulatory measure, not a specific function of the RADAR's measurement capabilities. Therefore, option B is clearly the correct definition of "lock speed."

The term "lock speed" on a RADAR display specifically refers to the captured speed of the target vehicle as indicated by the RADAR unit once it has successfully detected that vehicle. When the RADAR system locks onto a vehicle, it means that it has processed the return signals and calculated the speed of that specific target. This is a vital function for law enforcement or monitoring purposes because it provides the operator with an accurate reading of how fast the vehicle is traveling at that moment.

The other options describe different aspects that might be related to RADAR technology or roadway surveillance but do not pertain directly to what "lock speed" signifies. For example, the angle of the RADAR beam relates to its directional capability rather than the speed it captures. Similarly, while the total distance a vehicle has traveled might be measured with other systems, it is not indicated by "lock speed." Lastly, the maximum speed limit of an area is a regulatory measure, not a specific function of the RADAR's measurement capabilities. Therefore, option B is clearly the correct definition of "lock speed."