LIDAR technology is utilized for speed measuring instruments that capture measurements:

LIDAR technology, which stands for Light Detection and Ranging, is capable of measuring distances with high precision by bouncing laser beams off objects and calculating the time it takes for the light to return. This capability allows law enforcement agencies to use LIDAR devices effectively for speed measurement of vehicles as they pass by.

When we consider the context of speed measurement, capturing measurements "down the road" implies that the technology is used to assess the speed of vehicles traveling along a roadway, at a distance from the measurement device. This means that as vehicles approach or move away, LIDAR can accurately calculate their speed based on their distance from the device at various time intervals. Thus, it is the most fitting context for how LIDAR is used in traffic enforcement.

In contrast, the other options do not fully encapsulate the operational method of LIDAR in speed measuring contexts. For example, measuring "on the go" could refer to the movement of the LIDAR device, but does not specifically highlight the measurement of speed of vehicles as they are in motion down the roadway. Similarly, capturing measurements "at a standstill" implies that the LIDAR would not be measuring speeds effectively since no vehicle movement over time would be detected.