A traffic jam is a situation where vehicles are unable to move freely on a road, leading to slow or halted movement. This can occur due to various reasons, such as accidents, road construction, or high volumes of vehicles. Traffic jams are common in urban areas, especially during peak hours when many people are commuting to work or school. During a traffic jam, drivers may experience frustration and delays, which can affect their schedules. The congestion can also lead to increased fuel consumption and air pollution. To alleviate traffic jams, cities often implement measures like public transportation, carpooling, and traffic management systems.