These North American cities have the best public transit systems

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Global consultancy firm Arcadis put together its first-ever Sustainable Cities Mobility Index so people can evaluate how their homes' public transit system compares to ones in other cities.

Arcadis evaluated three factors to create the ranking: people, profit, and planet. These factors allow the firm to analyze things like hours of operation, transportation coverage, reliability, efforts to lower emissions and congestion, and average time spent commuting.

Arcadis said North American cities rank low on the global index because so many cities are designed to support the personal vehicle over public transit. Despite their overall low score, some North American cities still reign supreme over others.

Scroll down to see Arcadis' ranking of public transit systems in North America: