What factor may lead a commander to choose dismounted CBRN reconnaissance?

Dismounted CBRN reconnaissance is often chosen when the terrain is restrictive. In situations where the environment presents challenges—such as urban areas, dense forests, or other complex landscapes—vehicles may have difficulty navigating or may not be able to reach certain areas effectively. This restriction necessitates dismounted operations, where personnel can maneuver more freely and adaptively, allowing them to gather critical information about potential CBRN threats in locations that vehicles cannot access. The ability to traverse difficult terrains on foot can enhance the effectiveness of reconnaissance by facilitating closer inspections and more precise assessments of risk areas.