What type of traffic should use same direction radar only?

Same direction radar is most effective for light traffic scenarios. In these situations, vehicles are traveling in the same lane and direction, making it easier to measure their speed accurately without interference from other vehicles that may be nearby. Light traffic provides clearer detection opportunities, allowing the radar to focus on the target vehicle without being influenced by the speed readings of adjacent vehicles or those traveling in the opposite direction.

In contrast, heavy traffic can complicate radar readings due to multiple vehicles interfering with the signal. Stationary traffic presents challenges as well, as radar is designed to track moving vehicles. Fast-moving traffic may introduce complexities where multiple vehicles could potentially be measured at the same time, leading to inaccurate readings. Hence, light traffic is the ideal scenario for utilizing same direction radar, as it maximizes the chances for precise speed assessment.