When should the accuracy of a RADAR unit be tested?

The accuracy of a RADAR unit should indeed be tested at both the beginning and the end of each shift to ensure reliable operation throughout the entire period of usage. Conducting a test at the start of the shift verifies that the RADAR is functioning correctly and accurately measuring speeds as intended before any data collection begins. This initial check helps prevent erroneous readings that could impact enforcement decisions or data integrity.

Testing again at the end of the shift serves a critical purpose in confirming that the equipment has maintained its accuracy during the entire usage period. It allows operators to identify any potential drift or malfunction that may have occurred while the unit was in operation. This dual-check approach ensures ongoing reliability and accuracy of the RADAR readings, which is essential for proper enforcement and the safety of operations.

Testing only at the beginning or end would not provide a complete picture of the unit's accuracy throughout the shift, and hourly checks, while diligent, are typically more than necessary. Therefore, assessing accuracy at both the beginning and end strikes the right balance for ensuring operational integrity.