Millions of people will face traffic jams during the holiday season, leading to wasted time, fuel, and increased pollution. While many believe changing lanes will help, mathematics shows this is often incorrect. Traffic jams can occur without any clear cause, known as phantom traffic jams, where small differences in drivers’ braking and reaction times create stop-start waves. A 2008 study demonstrated this phenomenon when drivers on a circular track unintentionally caused a continuous wave of stops. Mathematicians use fluid dynamics to model traffic flow, explaining that while adding more vehicles initially increases flow, overcrowding eventually slows everyone down, reducing overall traffic movement.
QUESTION: How might understanding the mathematics of traffic flow change the way we approach driving during busy travel times?
The math of traffic jams and how to avoid them
