User Equilibrium

User equilibrium, in transportation, occurs when all travelers choose routes that balance their travel times, so no one can reduce their journey by switching routes. It’s like a stable point where everyone is satisfied with their current path because alternative routes don’t offer better, faster options. This state reflects a natural distribution of traffic where congestion and route choices reach a balance, preventing any individual from gaining an advantage by changing routes. Essentially, it's a steady state where all travelers are equally efficient in their route decisions, given the current traffic conditions.