Abstract

The local spatial autocorrelation and the kernel method for indentifying black zones
A comparative approach

FLAHAUT, B., MOUCHART, M., SAN MARTIN, E. and I. THOMA

this article aims to determine the location and the lenght of road sections characterized by a concentration of accidents (black zones). Two methods are compared: one based on a local decomposition of global autocorrelation index, the other on kernel estimation. After explanation, both methods are applied and compared in terms of operational results, respective advantages and shortcomings, as well as underlying conceptual elements. The operationality of both methods is illustrated by an application to one Belgian road.

  Last update: November 27, 2003  - Contact : S. Malali