What technique is primarily used to locate contaminated areas during route reconnaissance?

The lane technique is primarily used during route reconnaissance for locating contaminated areas. This approach involves moving along a predetermined path and systematically collecting data regarding potential hazards or contamination along that route. It allows for thorough observation of both sides of the road, as well as forward, ensuring that any signs of contamination can be detected. The lane technique emphasizes efficiency and clarity, making it easier to identify specific areas that warrant further investigation or mitigation.

By sticking closely to the route, recon teams can effectively document hazards and relay this information back to command for further action. This methodology is crucial in CBRN reconnaissance since the timely identification of contaminated zones is vital for the safety of personnel and operational planning. The other techniques, while beneficial in different scenarios, do not focus specifically on the systematic and comprehensive approach needed for route reconnaissance in contaminated environments.