What exercise is necessary for ensuring an accurate target speed reading in same lane mode?

The correct exercise necessary for ensuring an accurate target speed reading in same lane mode is the TS discrimination test. This test is vital for radar operators as it assesses the ability of the radar system to differentiate between the speed of a target vehicle and other potential influences, such as the speed of a vehicle in an adjacent lane or environmental factors that might affect readings.

Conducting this test helps confirm that the radar system can reliably identify the correct target speed, ensuring the operator has an accurate reading while minimizing the risk of misidentification or erroneous speed assessments. In scenarios where multiple vehicles could potentially reflect signals to the radar, the TS discrimination test becomes essential to confirm that the radar focuses on the intended object and differentiates it from others.

The other options, while they may relate to speed verification and calibration, do not specifically target the operational nuances of same lane mode performance as effectively as the TS discrimination test. These elements like speed calibration tests and target speed verification exercises serve different functions and might aid in overall radar accuracy but do not directly confirm the system's capacity to discern speed in dense traffic or similar conditions.