The A86 is a major ring road in the Île-de-France region of France, encircling the city of Paris. It serves as a key route for traffic, connecting various suburbs and facilitating travel around the metropolitan area. The road is approximately 80 kilometers long and is designed to alleviate congestion on other major roads. Constructed in the 1970s, the A86 features both above-ground and underground sections. It is part of a larger network of highways that includes the A6 and A4, providing essential links for commuters and freight transport. The road is also known for its toll sections, which help maintain its infrastructure.