Why Is It So Hard to Fix Traffic?

The video explores the complexities of traffic jams, highlighting that they are not solely caused by poor road design or bad drivers. Scientific models, like the jamming transition, show that congestion can occur simply due to high vehicle density. Braess' paradox reveals that adding more roads can worsen traffic, as drivers tend to choose routes they perceive as faster. Aggressive driving creates traffic waves, while zipper merging can reduce congestion. Effective traffic management requires balancing physics and psychology, emphasizing the importance of leaving space between cars and understanding human behavior.

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