Temporal aggregation and spatio-temporal traffic modeling

Traffic forecasting is crucial for policy making in the transport sector. Recently, Selby and Kockelman (2013) have proposed spatial interpolation techniques as suitable tools to forecast traffic at different locations. In this paper, the authors argue that an eventual source of uncertainty over those forecasts derives from temporal aggregation. However, they prove that the spatio-temporal correlation function is robust to temporal aggregations schemes when the covariance of traffic in different locations is separable in space and time. The authors prove empirically this result by conducting an extensive simulation study on the spatial structure of the Milan road network.


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  • Accession Number: 01572057
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 22 2015 9:12AM