Explore a critical security analysis of traffic infrastructure in this 22-minute conference talk from WOOT '14. Delve into the investigation of a networked traffic signal system deployed in the United States, uncovering significant security flaws resulting from systemic design failures. Learn how researchers leveraged these vulnerabilities to demonstrate successful attacks, gaining control of the system in coordination with authorities. Discover how adversaries can potentially disrupt traffic flow, compromise safety, or gain unfair advantages. Gain insights into recommended improvements for existing systems and broader lessons for embedded systems security. This eye-opening presentation highlights the crucial need for robust security measures in safety-critical infrastructure.