A Transit Visa is a type of visa that allows travelers to pass through a country while en route to their final destination. It is typically required for short stays, often lasting only a few hours or days, depending on the country's regulations. This visa is essential for passengers who have layovers in countries where they need to leave the airport or change terminals. Transit visas are usually easier to obtain than other types of visas, as they are meant for brief stays. However, requirements can vary by country, so travelers should check the specific rules for their layover country, such as Schengen Area nations or United States regulations, before their journey.