True or False: A smaller angle in RADAR measurements leads to a more accurate speed of the vehicle.

A smaller angle in RADAR measurements indeed leads to a more accurate speed of the vehicle. This is primarily due to the geometry involved in the radar speed measurement process. When a radar unit emits a signal to measure the speed of a vehicle, the angle at which the radar beam strikes the vehicle can significantly affect the accuracy of the speed reading.

When the radar beam is directed closer to the direction the vehicle is traveling (smaller angle), the return signal reflects a more direct measurement of the vehicle's actual speed. Essentially, this means more of the speed of the vehicle is captured in the measurement because the radar signal and the vehicle's movement are more aligned. Conversely, at larger angles, the radar may be measuring a component of the vehicle's speed, which leads to underestimations.

In summary, using a smaller angle helps ensure that the radar system accurately captures the true velocity of the vehicle, thus producing a more reliable speed reading.