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Challenge / Goal

The usage of the metro by the Stockholm population has been steadily increasing year by year. In some periods of the day, especially during peak hours, the metro trains tend to be very crowded. Passenger crowding in peak hours tends to be unevenly distributed, with some metro trains being over capacity and others with more free space, which deteriorates the public transport experience. People don’t have real-time information about metro train crowding, and they tend to just enter into the first one they see.


With the creation and employment of a real-time crowding information (RTCI) system, people will be able to see in real-time how crowded the metro trains are, helping to determine their decision making about which one they will take.

This pilot study aimed to trial such a system to see how much it could improve the daily commute of passengers using Stockholm's metro system.

Citizen participation

The implementation of this practice is dependent on having information available in two formats: visual (an overhead screen) and vocal (through a speaker system). The information is collected by an officer stationed in the previous station that will evaluate the metro train crowding in 3 levels: low, average and high.



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Time period

Planning time: Less than 6 months

Implementation time: Less than 6 months


Zhang, Y., Jenelius, E., & Kottenhoff, K

Service providers

Pilot project

End users

Metro Passangers

    Main benefits

  • Improving public transport accessibility

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