| A spatial-temporal approach based on historical transportation and land use data for Calgary, Alberta was applied to test whether transportation system performance has a quantifiable, although temporally lagged, influence on the timing and spatial character of Distribution-Logistics-Warehousing (DLW) land use development. This produced several findings. (1) There is an inverse relationship between DLW land development and transportation system performance. However, there are inconsistencies whereby some destinations are more influential than others suggesting that accessibility is spatially uneven. (2) Results of temporal analysis reveal a 5--10 year temporal lag in the relationship. Current DLW land development patterns demonstrate a relationship with traffic conditions at least five years in the past. (3) There is a congestion threshold below which congestion is not significant. This threshold indicates that traffic does not become an important factor until it generates a 2 to 3% global increase in travel time above free flow conditions. |
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