Suburban ''edge cities'' are an international phenomenon registering t
he impacts of a growing global economy, the increasing footlooseness o
f capital, advances in communication technology, the growth of hi-tech
industry, and the forces of decentralisation. Yet they do assume cult
urally specific forms. Using the case study of North Ryde in the Sydne
y metropolitan area, differences between Australia and the United Stat
es in terms of the dynamism and scale of their respective edge-city en
vironments are highlighted. Four explanatory factors are identified: t
he comparative nature of the Australian economy, the differential stre
ngth of planning controls, contrasting central city-suburban relations
hips, and a lesser degree of freeway dependence. (C) 1997 Elsevier Sci
ence B.V. All rights reserved.