Why Traffic Jams Appear out of Nowhere скачать в хорошем качестве

Why Traffic Jams Appear out of Nowhere

Phantom traffic jams appear without accidents, construction, or visible causes — yet they are a predictable result of traffic flow physics. This video explains how shockwaves propagate backward through traffic, how the fundamental diagram links flow, density, and speed, and why exceeding critical density causes instability. Using intuitive examples and Greenshields’ model, we show why adding more cars can reduce total throughput and trigger congestion. We also explore Braess’s Paradox, human reaction latency, and how small disturbances amplify into full stop-and-go waves. Finally, we look at control theory solutions like flow homogenization and adaptive cruise control that can stabilize traffic systems and reduce congestion. If you want to understand the physics behind traffic jams and why “more is less,” this breakdown connects math, engineering, and real-world driving. Chapters: 00:00 Intro 01:10 The Invisible "Wave" 02:04 The Fundamental Diagram 04:02 Example 05:27 Greenshield's Model 06:42 Braess's Paradox 07:25 The Latency Chain & Flow Homogenization 08:46 The Control Theory Solution (ACC) More like this: Videos: Gas vs. Diesel: How Internal Combustion Actually Works:    • Видео   Factor of Safety: Why Engineers Overbuild Everything:    • Why We Build Structures to Fail at 300%: F...   How Planes Fly: The Physics of Lift, Stalling, and Redundancy:    • How Planes Fly: The Physics of Lift, Stall...   The Human Limit: Why Cars Are Designed To Fail:    • The Physics of Car Crashes: Why Cars Are D...   Shorts: Your car runs on explosions:    • Your Car Runs on Explosions   Gasoline vs Diesel simplified:    • Gasoline vs Diesel simplified   Fire on a Schedule:    • Fire on a schedule   Just 5% more can break everything:    • Just 5% more can break everything   Elevator cables are built to hold:    • Elevator Cables Are Built to Hold   Most failures start invisible:    • Most Failures Start Invisible   The 300-Ton Glider:    • The 300 Ton Glider   The Physics Behind the Airfoil Shape:    • The Physics behind the Airfoil shape   What Happens During a Stall:    • What happens during a Stall   The Three Collisions on a Car Accident:    • The Three Collisions on a Car Accident  #a...   John Stapp's Experiment:    • John Stapp's Experiment #experiment #gforc...   Kinetic Energy During a Collision:    • Kinetic Energy travel during collision #au...   About This Channel: This channel explains engineering and STEM ideas using simple animations and calm narration, designed for curious people. New videos every week, so stay tuned for more! Join the Conversation: What topic should we cover next? Leave a comment with a question or everyday system you’d like to understand better. #engineering #physics #traffic #civilengineering #PrettySimpleEngineering