How Things Really Work on Instagram: "Traffic forms when driver behavior and road conditions interact in ways that restrict flow. Sudden braking, hesitation, and inconsistent speeds create shockwaves that ripple backward through lanes. Poor lane discipline and slow reaction times amplify these slowdowns, turning small disturbances into full stops even without an actual obstruction ahead. Bad roads worsen the effect by forcing vehicles to slow for potholes, tight merges, unclear markings, or limi