materials and colors, making each individual station more recognisable. Rolling stock Italian rolling stock manufacturer AnsaldoBreda, which had previously provided trains for the existing Copenhagen metro, was selected to supply new-build rolling stock for the line. Deliveries of the trains to the Metro company commenced during 2014; these are being referred to as being the version 5 of the AnsaldoBreda Driverless Metro trains. While these vehicles are broadly identical to the ones running on the Copenhagen metro, they feature several advancements in technology, materials and design. The driverless trains are directly monitored from the line's centralised operations and maintenance centre; they are equipped with a communications-based train control (CBTC) for this purpose. These vehicles are to reportedly capable of a top speed of 90 km/h, an increase over the 80 km/h maximum for trains used on other Metro lines. They have a maximum capacity of 314 passengers and there is a train every 100 seconds, giving a frequency of 36 trains per hour. The system runs 24 hours per day, and passengers are able to keep track of the train location through an electronic display system. References External links Information about the City Circle from the official Copenhagen Metro web site City Circle Line official website Railway loop lines Railway lines opened in 2019 2019 establishments in Denmark