rather than the calendar year. List by country Under construction The following is a list of new worldwide metro systems that are currently actively under construction. Note that in some cases it is not clear if the system will be considered a full metro system once it begins operational service. Only metro systems under construction are listed where there are no metro systems currently in operation in the same city. The countries of Ecuador, Ivory Coast, and Serbia are currently constructing their first ever metro systems. See also List of suburban and commuter rail systems List of airport people mover systems List of bus rapid transit systems List of automated train systems List of funicular railways List of monorail systems Medium-capacity rail system List of premetro systems List of rapid transit systems by track gauge List of tram and light rail transit systems List of town tramway systems List of trolleybus systems Notes System notes Ridership notes References System references Ridership references Under construction system references Sources Bibliography Online resources External links European Metropolitan Transport Authorities (EMTA) Metro List at CityRailTransit.com website Openstreetmap subway project Rapid transit systems Rapid transit