Madrid Metro Line 4, rapid transit line of the Madrid Metro
Madrid Metro Line 4 is a rapid transit railway line that moves through major areas of the city. It connects several important neighborhoods and serves as one of the busiest routes in the entire metro system.
Line 4 was built in phases to better serve the expanding city over time. It has been extended and updated several times to meet the needs of Madrid's growing population.
Trains run frequently during the day, making it straightforward to move between stations. During rush hours the cars can get crowded, so traveling outside peak times is a good idea if your schedule allows.
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