Reference: RED 12/32/20
Last update: 09/09/2003 10:50:50
The aim of this study is to look at the effects of integrating PUFFIN pedestrian crossing strategy with the SCOOT logic and to establish the best method of controlling PUFFINs with the current SCOOT logic and to determine the advantages and disadvantages of putting PUFFINs under SCOOT control.
A PUFFIN is a new method of control for pedestrian crossings which uses detectors to sense the presence of pedestrians on the crossing to extend the crossing time if necessary and kerbside detector to establish pedestrian presence in the wait area. At present when SCOOT is controlling a pelican crossing, the feedback logic in SCOOT assumes (correctly) that the pedestrian stage is a fixed length. With the introduction of the PUFFIN crossing as a replacement for pelicans and at junctions, the length of time that vehicles are stopped due to pedestrians will no longer be fixed, because of the variable intergreen between the pedestrian stage and the next vehicular stage.
Crowthorne House, Nine Mile Ride, Wokingham, Berkshire, RG40 3GA
+44 (0)1344 773131
Cost to the Department: £60,425.53
Actual start date: 17 November 1999
Actual completion date: 01 July 2001
Integration of Puffin Pedestrian Crossings in SCOOT
Author: A Maxwell and D Bretherton
Publication date: 31/07/2001
More information: http://www.trl.co.uk/store/reports.asp?pid=108
Departmental Assessment Status: Project completed prior to the implementation of the Departmental publications scheme.