An investigation into crossing times set at different pedestrian crossings across Edinburgh; an observational study.
Objective: To measure the time and distance at all pedestrian crossing types in Edinburgh, in order to determine the speed allocated to crossing times and auditory signals. Design: A Quantitative, Observational Descriptive Design. Crossing Inclusion/Exclusion: 101 pedestrian light controlled crossings (Puffin, Pelican and Toucan) in Edinburgh were included in this study. Zebra crossings and temporary traffic lights were excluded. Outcome Measures: 'Trumetre' trundle wheel to measure width (m) of crossings. 'ATP Digital Stopwatch' to time (s) the appearance of the solid Green man On to solid Green Man Off (GOGO), the solid Green man On to Red traffic light Off (GORO) and the duration of the Auditory Signal. Results: 100 (99%) GORO crossings met the 1.2m/s or below with a median speed of 0.71m/s (IQR 0.59-0.79m/s). 50.5% of GOGO signal met the 1.2m/s standardised speed and had a median speed of 1.49m/s (IQR 1.20-1.89m/s). Only 37 crossings had auditory signals two of which met the standardised speed. The median auditory speed was 2.61m/s (IQR 1.53-4.58m/s). Conclusion: The slowest walking speed (GORO) for all crossing types in Edinburgh is consistent with standardised timings. Safe to cross indicators such as, the solid green man (GOGO) and the auditory signals are not consistent with 1.2m/s. Pedestrian safety, particularly the elderly and visually impaired was highlighted in this study as the green man and auditory signals are failing to meet standardised timings. Further research to evaluate the consistency of safe indicators and crossing timings at pedestrian crossings in Edinburgh is needed.