What does the case Thomas v. City of Norfolk establish regarding accuracy testing?

The case Thomas v. City of Norfolk establishes that accuracy must be tested at the beginning and end of each shift. This is crucial for ensuring the reliability of RADAR and LIDAR devices, given that environmental conditions and equipment wear can affect their performance over time. By requiring testing at both the beginning and end of a shift, operators can confirm that the equipment is functioning correctly throughout its use. This dual approach helps maintain a high standard of accuracy in measurements, which is essential for upholding public safety and the integrity of enforcement actions based on the readings taken by these devices. Consistent testing at these intervals minimizes the risk of erroneous data that could arise from fluctuations during a shift, thereby enhancing the overall trustworthiness of speed detection and other metrics gathered through these technologies.