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Improving pedestrian facilities at signalised crossings

Improving pedestrian facilities at signalised crossings
Improving pedestrian facilities at signalised crossings
Traffic signal control systems are usually designed to maximise vehicle capacity and minimise vehicle delay with the needs of pedestrians considered separately as necessary. Therefore, the aim of this research is to improve the signal control at pedestrian crossings, so that optimisation takes into account the total delay to all road users including pedestrians. Upstream Detection and Volumetric Detection at pedestrian crossing facilities have been identified as potential alternatives that might enhance pedestrian amenity. These new possibilities were evaluated using a micro-simulation software. Research to date has shown that the VISSIM model is suitable for this evaluation and the latest algorithm for signal controlled pedestrian crossing, the Puffin has been coded into the model and tested. The Puffin then formed a base control strategy against which new strategies were evaluated. The new strategies were then evaluated based on travel delay to both vehicle and pedestrian and also financial benefit to the road crossing. After calibration and validation in VISSIM model, an Upstream Detection and Volumetric Detection were developed. In the Upstream Detection, a push button was located 5 meters at an upstream location of the crossing. In the Volumetric Detection, the optimum maximum green was determined based on the lowest total person delay and total delay costs. Generally, an Upstream Detection caused a reduction in total person delay and total delay costs at a lower vehicle flow. The Volumetric Detection caused a reduction in total person delay and total delay costs at all vehicle and pedestrian flow combinations. The results showed that both Upstream Detection and Volumetric Detection have promising benefits to implement at Puffin crossing. Upstream Detection has a clear benefit at a lower vehicle flow while the Volumetric Detection shows there are changes on maximum green settings at a lower vehicle flow as pedestrian flow increases.
Hassan, Sitti Asmah
3dd96faf-ea52-47ec-bf9e-c5cf84c20320
Hassan, Sitti Asmah
3dd96faf-ea52-47ec-bf9e-c5cf84c20320
Hounsell, Nicholas
54781702-9b09-4fb7-8d9e-f0b7833731e5

(2013) Improving pedestrian facilities at signalised crossings. University of Southampton, Faculty of Engineering and the Environment, Doctoral Thesis, 239pp.

Record type: Thesis (Doctoral)

Abstract

Traffic signal control systems are usually designed to maximise vehicle capacity and minimise vehicle delay with the needs of pedestrians considered separately as necessary. Therefore, the aim of this research is to improve the signal control at pedestrian crossings, so that optimisation takes into account the total delay to all road users including pedestrians. Upstream Detection and Volumetric Detection at pedestrian crossing facilities have been identified as potential alternatives that might enhance pedestrian amenity. These new possibilities were evaluated using a micro-simulation software. Research to date has shown that the VISSIM model is suitable for this evaluation and the latest algorithm for signal controlled pedestrian crossing, the Puffin has been coded into the model and tested. The Puffin then formed a base control strategy against which new strategies were evaluated. The new strategies were then evaluated based on travel delay to both vehicle and pedestrian and also financial benefit to the road crossing. After calibration and validation in VISSIM model, an Upstream Detection and Volumetric Detection were developed. In the Upstream Detection, a push button was located 5 meters at an upstream location of the crossing. In the Volumetric Detection, the optimum maximum green was determined based on the lowest total person delay and total delay costs. Generally, an Upstream Detection caused a reduction in total person delay and total delay costs at a lower vehicle flow. The Volumetric Detection caused a reduction in total person delay and total delay costs at all vehicle and pedestrian flow combinations. The results showed that both Upstream Detection and Volumetric Detection have promising benefits to implement at Puffin crossing. Upstream Detection has a clear benefit at a lower vehicle flow while the Volumetric Detection shows there are changes on maximum green settings at a lower vehicle flow as pedestrian flow increases.

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More information

Published date: 1 July 2013
Organisations: University of Southampton, Faculty of Engineering and the Environment

Identifiers

Local EPrints ID: 355891
URI: http://eprints.soton.ac.uk/id/eprint/355891
PURE UUID: 5ef60209-1171-441f-aaa0-8647cd635018

Catalogue record

Date deposited: 18 Nov 2013 12:12
Last modified: 18 Jul 2017 03:43

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Contributors

Author: Sitti Asmah Hassan
Thesis advisor: Nicholas Hounsell

University divisions

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