Scaling laws in the spatial structure of urban road networks
| dc.creator | Lämmer, Stefan | |
| dc.creator | Gehlsen, Björn | |
| dc.creator | Helbing, Dirk | |
| dc.date | 2006-03-30 | |
| dc.date.accessioned | 2026-07-07T07:07:50Z | |
| dc.date.available | 2026-07-07T07:07:50Z | |
| dc.description | The urban road networks of the 20 largest German cities have been analysed, based on a detailed database providing the geographical positions as well as the travel-times for network sizes up to 37,000 nodes and 87,000 links. As the human driver recognises travel-times rather than distances, faster roads appear to be 'shorter' than slower ones. The resulting metric space has an effective dimension d>2, which is a significant measure of the heterogeneity of road speeds. We found that traffic strongly concentrates on only a small fraction of the roads. The distribution of vehicular flows over the roads obeys a power law, indicating a clear hierarchical order of the roads. Studying the cellular structure of the areas enclosed by the roads, the distribution of cell sizes is scale invariant as well. | |
| dc.identifier | https://arxiv.org/abs/physics/0603257 | |
| dc.identifier | http://arxiv.org/abs/physics/0603257 | |
| dc.identifier | S. Lämmer, B. Gehlsen, and Dirk Helbing (2006) Scaling laws in the spatial structure of urban road networks, Physica A 363(1) 89-95 | |
| dc.identifier | doi:10.1016/j.physa.2006.01.051 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/110540 | |
| dc.subject | Physics and Society | |
| dc.title | Scaling laws in the spatial structure of urban road networks | |
| dc.type | text |