Transport for Greater Manchester (TfGM) commissioned TRL to investigate the potential use of non-prescribed zebra crossings at side roads. The research programme followed seven studies, beginning with analysis of collision statistics, progressing through user surveys and interviews, simulation studies and culminating in two on-street trials.
The introduction of non-prescribed crossings was found to increase the propensity of drivers to give way, without increasing the level of conflict. Compliance was lower for drivers turning right, and other potential risk factors were identified for which mitigations could be considered in future trials. Further trials are recommended to gain evidence from a wider range of sites over a longer time period.