Source: data from Kenworthy J., F. Laube, P. Newman, P. Barter, T. Raad, C. Poboon and B. Guia (1999) An International Sourcebook of Automobile Dependence in Cities, 1960‐ 1990, Boulder: University Press of Colorado.

Urban Density and Driving Speed, Selected Global Cities

As the urban setting becomes denser, congestion tends to impair circulation. While densities lower than 10,000 people per square mile tend to have limited effect on driving speed, as soon as this threshold is reached, driving speeds substantially decline.

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