Abstract
The Transport Road and Research Laboratory (TRRL) are undertaking a programme of research directed towards the revision of the criteria for the installation of pedestrian crossings, incorporating consideration of both delay and safety. As part of this work, Halcrow Fox and Associates were commissioned to carry out a study to derive models to predict pedestrian flows and accident frequencies at pedestrian crossing facilities. It was felt necessary to carry out further disaggregate analysis of the underlying data sets with particular emphasis on separately identifying the safety benefits of crossings to pedestrians. This work involved the estimation of casualty records associated with accidents at each surveyed site.