This report describes an analysis of injury accidents at 132 Pelican crossings and 111 Zebra crossings in Hertfordshire. Accident data included all accidents occurring at, or within 50 m of, each crossing location and covered the period from 1981 to 1986. Pedestrian and vehicle flow were represented by 5 hour continuous counts taken on week days during the morning or afternoon in the latter part of 1986. A generalised linear modelling package was used to relate accident frequencies to functions of pedestrian counts, vehicle counts, and road width. The effects of locational and environmental features were also examined. These included road layout, number of road lanes, traffic direction, the presence of guard rails at crossings, site type, proximity to a public house and proximity to a junction. Models for predicting the accident risk for all accidents and relevant accidents at Zebra and Pelican crossings are presented and the sensitivity and accuracy of the models is examined.

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