Abstract: The present invention discloses methods, apparatuses, and a system for improving intervehicular traffic safety by facilitating driver awareness of nearby vehicular traffic activity. Methods are disclosed for monitoring, detecting, and tracking “adjacent vehicles” (AVs) and “adjacent vehicle movements” (AVMs); calculating and displaying AV/AVM status data; and recommending and/or executing intervehicular maneuvering actions as needed. A driver-adjustable sensor apparatus is disclosed, allowing driver adjustment of AV/AVM “detection perimeters” (to increase/decrease detection ranges) based on traffic conditions, driver preferences, triggering of legal or preset thresholds, etc. Multiple versions of a “driver-adjustable” sensor and display system monitor, detect, and track traffic adjacent to a reference vehicle; calculate and display AV/AVM status data; and recommend and/or execute routine or emergency maneuvering actions needed to maintain vehicle safety during congestion or other intervehicular events.