WrongWayAlert™ is a Scalable Intrusion Warning System designed to retrofit on existing Wrong Way signage. WrongWayAlert™ raises driver awareness in dangerous “wrong way driver” situations, but also has the expanded capacity to simultaneously warn “right way” drivers that a wrong way vehicle is approaching. The system is affordable, scalable, solar powered and designed for quick retrofit installation. WrongWayAlert™ consists of a Basic System, and System Expansion & Upgrade components which can be purchased separately as needed.