What is the term used for a significant buildup of vehicles on the road, often leading to delays?

The term "congestion" refers to the significant buildup of vehicles on the road that often leads to delays. This occurs when the volume of traffic exceeds the road's capacity, resulting in slower movement or even a complete halt in vehicle flow. Congestion can happen during peak travel times, such as rush hours, or due to other factors like accidents or roadwork. It is characterized by a reduction in speed and an increase in travel times for drivers.

While some terms may capture aspects of traffic issues, congestion specifically denotes the state in which the road becomes overcrowded, affecting the overall movement of vehicles and increasing the likelihood of delays. Understanding congestion is essential for traffic management and urban planning, as it highlights the need for effective solutions to maximize road efficiency and improve travel conditions for motorists.