Urban Density and Driving Speed, Selected Global Cities

Urban Density and Driving Speed, Selected Global Cities

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.

As the urban setting becomes denser, congestion tends to impair circulation with average driving speed a good indication of congestion. While densities lower than 50,000 people per square km tend to have a limited effect on driving speed, as soon as this threshold is reached, driving speeds substantially decline.